We’re going to take a close look at all the common problems across every generation of the GMC Sierra 1500. That’s a lot years to cover so feel free to jump around using the table of contents below but if you want the quick answer here’s what you need to know:
The GMC Sierra 1500 has several common issues across all generations, including fuel pump failure, active fuel lifter failure, oil consumption, headlight switch failure, infotainment screen failure, and front wheel bearing failure.
Generation-specific problems include:
1st Gen (1999-2006): Turn signal switch and front impact sensor failures are common.
2nd Gen (2007-2013): Issues with the four-wheel drive selector switch and dashboard cracking.
3rd Gen (2014-2018): Magnetic ride suspension and transmission failures are the most prevalent.
4th Gen (2019-Present): Cylinder deactivation system, turbocharger, trailer brake controller, infotainment system, and forward collision warning system problems have been reported.
While some issues can be resolved easily, others may require costly repairs. Regular maintenance and prompt attention to any problems can help ensure the longevity and reliability of the GMC Sierra 1500.
That’s enough to keep you dangerous on the lot or Facebook Marketplace but if you want to get into the deeper details, see the breakdown of problem by owner, and a lot more keep reading.
We Used Real World Data To Rank The Most Common Problems With The Sierra 1500
Before we dive into the most common problems, let’s quickly explain how we created this list.
First, we asked 102 owners (via Facebook) about their GMC Sierra 1500 to get a feel for what kind of problems they’ve run into. Yes, it’s a small data set but it is real world data that’s hard to beat.
All owners had their GMC Sierra for at least two and we saw a wide range of mileage from 50,000 to 220,000.
Then, we turned to resources like the National Highway Traffic Safety Administration, and many others, to review the most common complaints issues by owners along with the full history of recalls and active investigations.
Next, I fact-checked everything against my almost two decades of automotive experience working everywhere from dealerships to your local shops. I also had a Sierra for a year in 2002!
Lastly, our team of automotive experts takes a closer look into each problem and breaks down why it happens, what you can do to prevent it, and how to fix it.
We review the data and interpret the results to make your life easier. Now that you understand how we came up with this list, let’s get into it!
What 102 GMC Sierra 1500 Owners Had To Say (Across All Generations)
Here’s how the problems broke down based on our survey:
Note: Some owners may have reported multiple problems, which is why the total number of reported problems exceeds the number of owners in the data set.
The data set also includes a small number of owners who have not reported any major problems, or problems that only occurred in their individual vehicle so they didn’t make the cut of our common problems.
Lastly, this chart is looking at all generations of the Sierra 1500 but some problems were fixed in later generations. Make sure you’re checking the article for the specific year you’re looking at.
Problems Common To All Generations of GMC Sierra 1500
When it comes to the GMC Sierra 1500, regardless of the generation, there are a few problems that pop up consistently. In this section, we’ll dive into the most common issues that plague all generations of this popular pickup truck, starting with the engine and moving on to electrical and suspension problems.
Fuel Pump Failure
The fuel pump is a critical component of any vehicle, and when it fails, it can cause some serious headaches. In the GMC Sierra 1500, fuel pump failure is a very common problem that can cause the engine to stall or not start at all.
The most common symptoms of a failing fuel pump include:
- Engine sputtering or stalling
- Difficulty starting the engine
- Whining noise from the fuel tank
- Reduced fuel efficiency
The primary cause of fuel pump failure in the Sierra is wear and tear over time. As the vehicle ages and racks up more miles, the fuel pump is subjected to constant use and can eventually fail.
If you suspect that your fuel pump is failing, the best solution is to replace it as soon as possible. Ignoring the problem can lead to much more serious issues down the road, such as engine damage or being stranded on the side of the road.
The cost of replacing a fuel pump in a GMC Sierra 1500 can vary depending on the specific model and year, but on average, you can expect to pay between $600 and $1,000 for parts and labor. If you’re handy, this can be a DIY job and this video is worth checking out if you’re a Sierra 1500 owner since more than 14% of the folks we surveyed had to deal with this:
Active Fuel Lifter Failure
The active fuel lifters are responsible for controlling the flow of oil to the engine’s valvetrain, and when they fail, it can cause a host of issues.
Symptoms of active fuel lifter failure include:
- Rough idle
- Misfiring or hesitation during acceleration
- Check engine light illumination
- Ticking or tapping noise from the engine
The primary cause of active fuel lifter failure is debris or sludge buildup in the oil, which can cause the lifters to stick or malfunction. You’ll see this more often in higher mileage trucks that may have gone too long between oil changes.
If you’re experiencing active fuel lifter failure, the solution is often a partial engine rebuild, which involves replacing the affected lifters and any other damaged components. This can be a costly repair, with prices ranging from $1,500 to $3,000 or more depending on the extent of the damage.
To prevent active fuel lifter failure, I always recommend keeping up with regular oil changes and specifically checking for this when you’re changing the oil to try and catch it early.
Oil Consumption
Excessive oil consumption is another common problem that affects all generations of the GMC Sierra 1500, particularly those equipped with the 5.3L V8 engine. If you find yourself constantly topping off your oil between changes, it could be a sign of a larger issue.
Symptoms of excessive oil consumption include:
- Low oil level between changes
- Burning oil smell from the exhaust
- Blue smoke from the tailpipe
- Reduced engine performance
The primary causes of excessive oil consumption in the Sierra are worn piston rings, valve seals, or PCV system issues. As these components age and wear out, they can allow oil to seep past and burn up in the combustion chamber.
If you’re experiencing excessive oil consumption, the first step is to determine the root cause of the problem. This may involve a compression test, leak-down test, or other diagnostic procedures. Once the cause is identified, the solution may involve replacing the affected components, such as the piston rings or valve seals.
The cost of addressing excessive oil consumption can vary widely depending on the specific cause and the extent of the repair. In some cases, a simple PCV valve replacement may do the trick, while in others, a complete engine overhaul may be necessary. On average, you can expect to pay anywhere from a few hundred to several thousand dollars to address this issue.
Headlight Switch Failure
Headlight switch failure is a common electrical problem that affects all generations of the GMC Sierra 1500. The headlight switch is responsible for controlling the headlights, parking lights, and interior lights, and when it fails, it can cause a variety of issues.
Symptoms of a failing headlight switch include:
- Headlights that flicker or don’t turn on at all
- Interior lights that don’t work properly
- Parking lights that don’t turn on or off
The primary cause of headlight switch failure is wear and tear over time. As the switch is used repeatedly, the internal contacts can become worn or corroded, leading to intermittent or complete failure.
If you’re experiencing headlight switch issues, the best solution is to replace the switch entirely. This is a relatively simple process that involves removing the switch from the dashboard and installing a new one in its place.
The cost of replacing a headlight switch in a GMC Sierra 1500 is relatively affordable, with parts and labor typically costing between $50 and $150 depending on the specific model and year.
Infotainment Screen Failure
Infotainment screen failure is a common problem that affects newer generations of the GMC Sierra 1500. The infotainment system is responsible for controlling the audio, navigation, and other features of the vehicle, and when the screen fails, it can be a major inconvenience.
Symptoms of infotainment screen failure include:
- Blank or distorted screen
- Unresponsive touchscreen
- Audio that cuts out or doesn’t work at all
The primary causes of infotainment screen failure are software glitches, hardware malfunctions, or physical damage to the screen itself. In some cases, a simple software update may resolve the issue, while in others, the entire unit may need to be replaced.
If you’re experiencing infotainment screen issues, the first step is to try a soft reset of the system. This involves turning the vehicle off, waiting a few minutes, and then turning it back on again. If this doesn’t work, you may need to take your Sierra to a dealer or qualified repair shop for further diagnosis and repair.
The cost of replacing an infotainment screen in a GMC Sierra 1500 can be quite high, with parts and labor often exceeding $1,000. However, if the issue is covered under warranty, you may be able to get the repair done at no cost to you so you definitely want to check that before forking over the cash.
Front Wheel Bearing Failure
Front wheel bearing failure is a common suspension problem that affects all generations of the GMC Sierra 1500. The front wheel bearings are responsible for allowing the front wheels to rotate smoothly and without friction, and when they fail, it can cause a variety of issues.
Symptoms of front wheel bearing failure include:
- Grinding or humming noise from the front wheels
- Vibration or wobbling sensation while driving
- Uneven tire wear
- Steering wheel that feels loose or wandering
The primary cause of front wheel bearing failure is wear and tear over time, particularly on vehicles with high mileage. As the bearings are subjected to constant use and exposure to the elements, they can become worn or damaged, leading to failure.
If you suspect that your front wheel bearings are failing, the best solution is to replace them as soon as possible. Ignoring the problem can lead to more serious issues, such as wheel separation or loss of steering control.
The cost of replacing front wheel bearings in a GMC Sierra 1500 can vary depending on the specific model and year, but on average, you can expect to pay between $300 and $800 for parts and labor. This may seem like a high cost, but trust me, it’s a lot cheaper than dealing with the potential consequences of ignoring the problem.
To prevent front wheel bearing failure, I recommend having your Sierra’s suspension inspected regularly and replacing any worn or damaged components as soon as they’re identified. This can help extend the life of your bearings and keep your truck running smoothly for years to come.
Problems Specific To Generation 1 of GMC Sierra 1500 (1999-2006)
The first generation of the GMC Sierra 1500 had its share of unique problems, particularly when it came to electrical components. In this section, we’ll take a closer look at two of the most common issues specific to this generation: turn signal switch failure and front impact sensor failure.
It’s worth noting that since even the newest generation 1 Sierra is pretty dang old at this point, we see more problems here on average. Here’s how the problems breakdown based on our survey:
Turn Signal Switch Failure
Turn signal switch failure is a common problem that affects the first generation of the GMC Sierra 1500. The turn signal switch is responsible for controlling the turn signals, hazard lights, and windshield wipers, and when it fails, it can cause a variety of issues.
Symptoms of a failing turn signal switch include:
- Turn signals that don’t work or only work intermittently
- Hazard lights that don’t turn on or flash erratically
- Windshield wipers that don’t work or only work on certain settings
The primary cause of turn signal switch failure is wear and tear over time. As the switch is used repeatedly, the internal contacts can become worn or corroded, leading to intermittent or complete failure.
If you’re experiencing turn signal switch issues, the best solution is to replace the switch entirely. This is a relatively simple process that involves removing the steering wheel and installing a new switch in its place.
The cost of replacing a turn signal switch in a first-generation GMC Sierra 1500 is relatively affordable, with parts and labor typically costing between $100 and $200 depending on the specific model and year.
Front Impact Sensor Failure
Front impact sensor failure is another common problem specific to the first generation of the GMC Sierra 1500 and one I know all too well (I dealt with this when I had my Sierra). The front impact sensors are responsible for detecting a collision and triggering the airbags to deploy, and when they fail, it can compromise the safety of the vehicle’s occupants.
Symptoms of front impact sensor failure include:
- Airbag warning light illuminated on the dashboard
- Airbags that don’t deploy in the event of a collision
- Diagnostic trouble code B0100 stored in the vehicle’s computer
The primary cause of front impact sensor failure is corrosion or physical damage to the sensors themselves. The sensors are located at the front of the vehicle, where they’re exposed to the elements and potential impact damage.
If you suspect that your front impact sensors are failing, the best solution is to have them replaced by a qualified mechanic. This involves disconnecting the battery, removing the old sensors, and installing new ones in their place.
The cost of replacing front impact sensors in a first-generation GMC Sierra 1500 can vary depending on the specific model and year, but on average, you can expect to pay between $200 and $500 for parts and labor.
Problems Specific To Generation 2 of GMC Sierra 1500 (2007-2013)
The second generation of the GMC Sierra 1500 brought with it some new problems, particularly when it came to the four-wheel drive system and interior components.
In this section, we’ll explore two of the most common issues specific to this generation: four-wheel drive selector switch failure and dashboard cracking.
Four-Wheel Drive Selector Switch Failure
Four-wheel drive selector switch failure is a common problem that affects the second generation of the GMC Sierra 1500. The selector switch is responsible for engaging and disengaging the four-wheel drive system, and when it fails, it can cause a variety of issues.
Symptoms of a failing four-wheel drive selector switch include:
- Four-wheel drive system that won’t engage or disengage
- “Service 4WD” message displayed on the dashboard
- Grinding or clicking noise when attempting to shift into four-wheel drive
The primary cause of four-wheel drive selector switch failure is wear and tear over time, particularly on vehicles that are frequently used in off-road or heavy-duty applications.
If you’re experiencing issues with your Sierra’s four-wheel drive system, I always recommend starting with a thorough diagnostic check to identify the root cause of the problem. This may involve checking the selector switch, transfer case, and other related components for signs of wear or damage.
If the selector switch is found to be the culprit, the best solution is to replace it with a new one. This is a relatively straightforward process that can typically be completed in a few hours by a qualified mechanic.
The cost of replacing a four-wheel drive selector switch in a second-generation GMC Sierra 1500 can vary depending on the specific model and year, but on average, you can expect to pay between $200 and $500 for parts and labor.
Dashboard Cracking
Dashboard cracking is a common problem that affects the second generation of the GMC Sierra 1500, particularly on vehicles that are exposed to extreme temperatures or prolonged sunlight. The dashboard is made of a soft-touch plastic material that can become brittle and crack over time, leading to an unsightly appearance and potential safety hazards.
Symptoms of a cracking dashboard include:
- Cracks or splits in the dashboard material
- Pieces of the dashboard breaking off or falling into the footwell
- Sharp edges or points that can cause cuts or scrapes
The primary cause of dashboard cracking is exposure to heat and sunlight, which can cause the plastic material to degrade and become brittle over time. This is particularly common in vehicles that are parked outside for long periods or driven in hot climates.
If your Sierra’s dashboard is cracking, the best solution is to have it replaced by a qualified mechanic. This is a labor-intensive process that involves removing the old dashboard and installing a new one in its place.
The cost of replacing a dashboard in a second-generation GMC Sierra 1500 can be quite high, with parts and labor often exceeding $1,000. However, if the issue is caught early and only affects a small area of the dashboard, it may be possible to repair the damage at a lower cost.
A simple sunshade can help prevent this and is also just nice to have if you live in a hot area.
Problems Specific To Generation 3 of GMC Sierra 1500 (2014-2018)
The third generation of the GMC Sierra 1500 saw some significant changes and improvements over its predecessors, but it also introduced a few new problems of its own. We’ll take a closer look at two of the most common issues specific to this generation: magnetic ride suspension failure and transmission failure.
Magnetic Ride Suspension Failure
Magnetic ride suspension failure is a problem that affects some models of the third-generation GMC Sierra 1500, particularly those equipped with the optional magnetic ride control system. This system uses specialized shock absorbers filled with magnetorheological fluid to provide a smooth, comfortable ride, but when it fails, it can cause a variety of issues.
Symptoms of magnetic ride suspension failure include:
- Rough or bouncy ride, particularly over bumps or uneven surfaces
- Suspension that feels too stiff or too soft
- Warning messages or error codes related to the suspension system
The primary cause of magnetic ride suspension failure is a malfunction in the system’s electronic control module or a failure of the shock absorbers themselves. This can be caused by wear and tear over time, exposure to extreme temperatures or moisture, or other factors.
If you’re experiencing issues with your Sierra’s magnetic ride suspension, the first step is to have the system diagnosed by a qualified mechanic. They will likely use a diagnostic tool to check the electronic control module for error code C0660, which specifically indicates a problem with the magnetic ride control system.
If your Sierra throws a C0660, your shocks will need to be replaced with new units. This is a labor-intensive process that requires specialized tools and knowledge, so it’s best left to a professional.
The cost of replacing the magnetic ride suspension in a third-generation GMC Sierra 1500 can be quite high, with parts and labor often exceeding $2,000. However, if the issue is caught early and only affects one or two shock absorbers, it may be possible to replace just those units at a lower cost.
Transmission Failure
Transmission failure is another common problem that affects the third generation of the GMC Sierra 1500, particularly on models equipped with the 8-speed automatic transmission. It’s an issue we’ve seen in other GMC models too.
This transmission is known for its smooth shifting and fuel efficiency, but it can also be prone to failure under certain conditions.
Symptoms of transmission failure include:
- Slipping or jerking during acceleration or gear changes
- Delayed or harsh shifting
- Warning messages or error codes related to the transmission
- Fluid leaks or burning smell from the transmission area
The primary causes of transmission failure in the third-generation Sierra are varied, but they can include problems with the valve body, torque converter, or planetary gears. These issues can be caused by wear and tear over time, improper maintenance, or manufacturing defects.
If you suspect that your Sierra’s transmission is failing, the first step is to have it inspected by a qualified mechanic. This may involve checking the fluid level and condition, performing a road test to identify any unusual behaviors, and using diagnostic tools to check for error codes or other issues.
If the transmission is found to be failing, the best solution is often to have it rebuilt or replaced entirely. This is a major repair that can take several days to complete, and it can be quite expensive, with costs often exceeding $3,000.
To prevent transmission failure in your third-generation Sierra, I recommend following the manufacturer’s recommended maintenance schedule, which includes regular fluid changes and inspections. You should also avoid abusing the transmission by towing heavy loads or driving aggressively, as this can accelerate wear and tear on the components.
Problems Specific To Generation 4 of GMC Sierra 1500 (2019-Present)
As the newest generation of the GMC Sierra 1500, the fourth generation has only been on the market for a few years, so it’s still a bit early to identify all of the potential problems that may arise over time. However, there are a few issues that have already been reported by owners and mechanics, particularly related to the cylinder deactivation system and infotainment system.
Here’s a chart of everything reported by newest generation Sierra 1500 owners:
Cylinder Deactivation System Failure
Cylinder deactivation system failure is a problem that affects some models of the fourth-generation GMC Sierra 1500, particularly those equipped with the 5.3L V8 engine. This system is designed to improve fuel efficiency by deactivating some of the engine’s cylinders when they’re not needed, but when it fails, it can cause a variety of issues.
Symptoms of cylinder deactivation system failure include:
- Rough idle or misfires
- Reduced power or acceleration
- Warning messages or error codes related to the engine
- Increased fuel consumption
The primary cause of cylinder deactivation system failure is a malfunction in the system’s electronic control module or a failure of the lifters or other components that control the cylinder deactivation process. This can be caused by wear and tear over time, exposure to extreme temperatures or moisture, or other factors.
If the lifters or other components are found to be the problem, they’ll need to be replaced with new units. This is a labor-intensive process that requires specialized tools and knowledge, so it’s best left to a professional.
The cost of repairing or replacing the cylinder deactivation system in a fourth-generation GMC Sierra 1500 can vary depending on the specific issue and the extent of the damage, but it can easily exceed $1,000 in some cases.
To prevent cylinder deactivation system failure in your fourth-generation Sierra, I recommend following the manufacturer’s recommended maintenance schedule, which includes regular oil changes and inspections. You should also avoid using low-quality or incorrect types of oil, as this can accelerate wear and tear on the system’s components.
Turbocharger Failure
Turbocharger failure is a problem that can affect some models of the fourth-generation GMC Sierra 1500, particularly those equipped with the 2.7L turbocharged four-cylinder engine. This engine is designed to provide a balance of power and fuel efficiency, but when the turbocharger fails, it can cause a variety of issues.
Symptoms of turbocharger failure include:
- Reduced power or acceleration
- Unusual noises from the engine, such as whistling or whining
- Warning messages or error codes related to the turbocharger
- Excessive smoke or oil consumption
The primary causes of turbocharger failure in the fourth-generation Sierra are varied, but they can include problems with the turbocharger’s bearings, seals, or other internal components. These issues can be caused by wear and tear over time, improper maintenance, or manufacturing defects.
If you suspect that your Sierra’s turbocharger is failing, the first step is to have it inspected by a qualified mechanic. This may involve checking the turbocharger for signs of damage or wear, performing a boost pressure test, and using diagnostic tools to check for error codes or other issues.
If the turbocharger is found to be failing, the best solution is often to have it replaced entirely. This is a major repair that can take several hours to complete, and it can be quite expensive, with costs often exceeding $2,000.
To prevent turbocharger failure in your fourth-generation Sierra, I recommend following the manufacturer’s recommended maintenance schedule, which includes regular oil changes and inspections. You should also avoid overworking the turbocharger by towing heavy loads or driving aggressively, as this can accelerate wear and tear on the components.
Trailer Brake Controller Failure
Trailer brake controller failure is a problem that can affect some models of the fourth-generation GMC Sierra 1500, particularly those equipped with the integrated trailer brake controller. This system is designed to provide safe and effective braking for trailers, but when it fails, it can cause a variety of issues.
Symptoms of trailer brake controller failure include:
- Trailer brakes that don’t engage or disengage properly
- Warning messages or error codes related to the trailer brake system
- Reduced braking performance or stability when towing a trailer
The primary causes of trailer brake controller failure in the fourth-generation Sierra are varied, but they can include problems with the controller’s wiring, sensors, or other components. These issues can be caused by wear and tear over time, exposure to moisture or other environmental factors, or manufacturing defects.
If you’re experiencing issues with your Sierra’s trailer brake controller, the first step is to have the system diagnosed by a qualified mechanic. This may involve checking the wiring and connections for signs of damage or corrosion, testing the sensors and other components, and using diagnostic tools to check for error codes or other issues.
If the trailer brake controller is found to be failing, the best solution is often to have it replaced entirely. This is a relatively straightforward repair that can typically be completed in a few hours, but it can be costly, with parts and labor often exceeding $500.
To prevent trailer brake controller failure in your fourth-generation Sierra, I recommend regularly inspecting the system for signs of wear or damage, particularly if you frequently tow heavy loads. You should also avoid exposing the controller to moisture or other environmental hazards, and follow the manufacturer’s recommended maintenance schedule for the braking system.
Infotainment System Freezing or Crashing
Infotainment system freezing or crashing is a problem that can affect some models of the fourth-generation GMC Sierra 1500, particularly those equipped with the latest infotainment system. This system is designed to provide a range of features and functions, including navigation, audio, and smartphone integration, but when it fails, it can cause a variety of issues.
Symptoms of infotainment system freezing or crashing include:
- System that becomes unresponsive or freezes up
- Blank or distorted screen
- Error messages or codes related to the infotainment system
- Loss of audio or other functions
The primary causes of infotainment system freezing or crashing in the fourth-generation Sierra are varied, but they can include problems with the system’s software, hardware, or other components. These issues can be caused by software glitches, compatibility issues with connected devices, or manufacturing defects.
If you’re experiencing issues with your Sierra’s infotainment system, the first step is to try a soft reset of the system. This typically involves holding down the power button for several seconds until the system reboots. If this doesn’t resolve the issue, you may need to have the system diagnosed by a qualified mechanic or dealership technician.
If the infotainment system is found to be failing, the best solution is often to have it updated with the latest software or replaced entirely. Software updates can often be performed at no cost, but hardware replacements can be quite expensive, with parts and labor often exceeding $1,000.
To prevent infotainment system freezing or crashing in your fourth-generation Sierra, I recommend keeping the system updated with the latest software and firmware, and avoiding connecting incompatible devices or software. You should also avoid exposing the system to extreme temperatures or moisture, as this can accelerate wear and tear on the components.
Forward Collision Warning System False Alarms
Forward collision warning system false alarms are a problem that can affect some models of the fourth-generation GMC Sierra 1500, particularly those equipped with the optional driver assistance package. This one is really common and you can see a long list of Redditors are struggling with this problem.
This system is designed to alert drivers to potential collisions and provide automatic emergency braking, but when it malfunctions, it can cause a variety of issues.
Symptoms of forward collision warning system false alarms include:
- Warning alerts or alarms that activate when no collision is imminent
- Automatic emergency braking that engages unexpectedly
- Reduced driver confidence in the system’s reliability
The primary causes of forward collision warning system false alarms in the fourth-generation Sierra are varied, but they can include problems with the system’s sensors, cameras, or software. These issues can be caused by environmental factors like rain, snow, or fog, as well as software glitches or manufacturing defects.
If the forward collision warning system is found to be malfunctioning, the best solution is often to have it recalibrated or updated with the latest software. In some cases, hardware components like sensors or cameras may need to be replaced entirely. The cost of these repairs can vary depending on the specific issue and the extent of the damage, but it can easily exceed $500 in some cases.
To prevent forward collision warning system false alarms in your fourth-generation Sierra, I recommend keeping the system updated with the latest software and firmware, and ensuring that the sensors and cameras are clean and unobstructed. You should also be aware of the system’s limitations in certain environmental conditions, and avoid relying on it as a substitute for safe and attentive driving practices.
Closing Thoughts
While the GMC Sierra 1500 has had its fair share of problems over the years, it remains a reliable and capable truck for those who stay on top of maintenance and address issues promptly.
If you’re in the market for a used Sierra 1500, aim for newer generations and be prepared to tackle common problems like fuel pump failure and oil consumption. With proper care, your Sierra 1500 can be a dependable workhorse for years to come.
