2017 GMC Sierra 1500 Transmission Problems

In this article, we will be discussing the transmission problems that have been reported with the 2017 GMC Sierra 1500. You will learn about some common issues that owners have experienced with this particular model and the potential causes behind them. We will also explore any known solutions or recommendations provided by experts in the field. By the end, you will have a better understanding of the 2017 GMC Sierra 1500 transmission problems and how you can potentially address them.

2017 GMC Sierra 1500 Transmission Problems

Common Transmission Problems in 2017 GMC Sierra 1500

Delayed Engagement

One of the common transmission problems experienced by owners of the 2017 GMC Sierra 1500 is delayed engagement. This occurs when there is a delay in the transmission engaging into gear after shifting. It can be frustrating and potentially dangerous, especially in situations that require quick acceleration.

Gear Slippage

Gear slippage is another prevalent transmission issue in the 2017 GMC Sierra 1500. This occurs when the transmission unexpectedly slips out of gear or fails to stay in the intended gear. Gear slippage can lead to a loss of power and control over the vehicle, making it a significant concern for owners.

Transmission Fluid Leaks

Transmission fluid leaks are also a common problem in the 2017 GMC Sierra 1500. Leaking fluid can be identified by puddles or stains underneath the vehicle. If left unaddressed, low fluid levels can cause damage to the transmission and result in costly repairs.

Causes of Transmission Problems

Manufacturing Defects

In some cases, transmission problems in the 2017 GMC Sierra 1500 can be attributed to manufacturing defects. These defects may include faulty seals or gaskets, inadequate fluid pressure, or other issues in the design or production of the transmission system. Manufacturers may issue recalls or provide warranty coverage for vehicles with such defects.

Lack of Maintenance

Another common cause of transmission issues is a lack of regular maintenance. Failure to change the transmission fluid at recommended intervals or neglecting other routine maintenance tasks can lead to problems with the transmission. Over time, the fluid can become dirty or contaminated, affecting the transmission’s performance and potentially causing damage.


Overheating is another significant factor contributing to transmission problems in the 2017 GMC Sierra 1500. Excessive heat can cause the transmission fluid to break down or evaporate, leading to decreased lubrication and increased friction. This can result in internal damage to the transmission and the failure of vital components.

Symptoms of Transmission Problems

Check Engine Light On

One of the primary indicators of transmission problems in the 2017 GMC Sierra 1500 is the illumination of the check engine light. When the transmission encounters an issue, it sends a signal to the vehicle’s computer, which triggers the check engine light. This warning should not be ignored and should prompt immediate inspection and diagnosis.

Burning Smell

Another symptom of transmission problems is a burning smell coming from the vehicle. This odor is often caused by overheating transmission fluid or burning clutch plates. If you notice a burning smell while driving your 2017 GMC Sierra 1500, it is essential to have your transmission inspected as soon as possible.

Unusual Noises

Unusual noises, such as grinding, whining, or clunking sounds, can also indicate transmission problems in the 2017 GMC Sierra 1500. These noises may occur while shifting gears or during normal driving. Ignoring these sounds can result in further damage to the transmission and potentially more expensive repairs.

Effects of Transmission Problems on Vehicle Performance

Reduced Power and Acceleration

Transmission problems can significantly affect the 2017 GMC Sierra 1500’s power and acceleration. Gear slippage or delayed engagement can result in a loss of power when accelerating or difficulty reaching higher speeds. This can be frustrating for drivers and may compromise the overall performance of the vehicle.

Difficulty Shifting Gears

Another effect of transmission problems is difficulty shifting gears. This can manifest as rough or jerky shifting, hesitation when changing gears, or the transmission getting stuck in a particular gear. These issues can make driving the 2017 GMC Sierra 1500 an unpleasant experience and increase the risk of accidents.

Increased Fuel Consumption

Transmission problems can also contribute to increased fuel consumption in the 2017 GMC Sierra 1500. When the transmission is not operating correctly, the engine may need to work harder to compensate for the power loss or inefficient gear ratios. This can lead to higher fuel consumption and ultimately increased costs for the owner.

2017 GMC Sierra 1500 Transmission Problems

Diagnosing Transmission Problems

Diagnostic Trouble Codes (DTC)

When experiencing transmission problems, the first step in diagnosing the issue is to retrieve diagnostic trouble codes (DTCs) using a diagnostic scanner. These codes provide valuable information about the specific problem affecting the transmission. An experienced mechanic or authorized service center can interpret these codes and pinpoint the underlying issue.

Fluid Level and Condition Check

Checking the transmission fluid level and condition is another crucial step in diagnosing transmission problems. Insufficient fluid or contamination can both contribute to transmission issues. Checking the fluid level and condition allows mechanics to identify any potential causes and determine the necessary course of action, whether it be a fluid change or further repairs.

Mechanical Inspection

In some cases, a mechanical inspection may be required to diagnose transmission problems fully. This involves inspecting the internal components of the transmission for any signs of wear, damage, or malfunction. By visually inspecting the transmission, mechanics can identify any faulty or failing parts and recommend the appropriate repairs.

Common Solutions for Transmission Problems

Transmission Flush and Fluid Change

One common solution for transmission problems is a transmission flush and fluid change. This involves draining the old fluid, flushing out the transmission system to remove any contaminants, and refilling it with fresh fluid. This process can help remove debris that may be causing issues and improve the overall performance of the transmission.

Repair or Replacement of Faulty Components

In some cases, transmission problems may require the repair or replacement of faulty components. This can range from replacing worn-out clutch plates to repairing or replacing solenoids, sensors, or other internal components. The specific repair needed will depend on the underlying issue diagnosed during the inspection process.

Software Updates

Software updates can also address certain transmission problems in the 2017 GMC Sierra 1500. Manufacturers may release software updates to resolve issues related to transmission control modules or improve the overall transmission performance. Having these updates installed can help optimize the transmission’s operation and prevent future problems.

Cost of Repairing Transmission Problems

Labor Costs

The cost of repairing transmission problems in the 2017 GMC Sierra 1500 can vary depending on the severity of the issue and the labor rates of the repair shop. Labor costs can be significant, especially for more complex repairs that require the removal and disassembly of the transmission. It is essential to obtain multiple quotes from reputable mechanics to ensure a fair price.

Replacement Parts

The cost of replacement parts can also contribute to the overall expense of repairing transmission problems. Depending on the specific component that needs to be replaced, the cost can vary. It is advisable to use genuine OEM (Original Equipment Manufacturer) parts to ensure compatibility and optimal performance.

Possible Warranty Coverage

If your 2017 GMC Sierra 1500 is still under warranty, some transmission repairs may be covered by the manufacturer. It is essential to review the terms and conditions of your warranty to determine if the specific transmission issue you are experiencing is eligible for coverage. Taking advantage of any warranty coverage can help reduce the cost of repairs significantly.

Preventive Measures for Transmission Problems

Regular Fluid Changes

Regular transmission fluid changes are one of the most effective preventive measures for avoiding transmission problems. Following the manufacturer’s recommended interval for fluid changes ensures that the transmission is properly lubricated and protected from damage. Fresh fluid helps maintain optimal performance and extends the lifespan of the transmission.

Avoiding Heavy Towing

Avoiding heavy towing or excessive load can also help prevent transmission problems in the 2017 GMC Sierra 1500. Towing heavy loads puts additional strain on the transmission, leading to increased heat and potential damage. Operating within the recommended towing limits can help prevent premature wear and minimize the risk of transmission issues.

Proper Cooling System Maintenance

Maintaining the cooling system of the 2017 GMC Sierra 1500 is crucial for preventing transmission problems. Overheating can cause significant damage to the transmission, so ensuring that the cooling system is in good working order is essential. Regular checks for coolant leaks, proper levels of coolant, and functioning fans or temperature control systems can help prevent overheating.

Seeking Professional Help for Transmission Problems

Certified GMC Mechanics

When facing transmission problems, it is crucial to seek the help of certified GMC mechanics. These professionals have the necessary training and expertise to diagnose and repair transmission issues specific to the 2017 GMC Sierra 1500. Going to certified mechanics ensures that your vehicle is in capable hands and increases the likelihood of a successful resolution.

Authorized Service Centers

Authorized service centers are another reliable option for dealing with transmission problems. These centers have direct access to manufacturer-approved resources and tools, ensuring that repairs meet the highest standards. Additionally, authorized service centers often have a better understanding of common issues specific to the 2017 GMC Sierra 1500 and can provide more accurate diagnoses and solutions.

Expert Transmission Specialists

In some cases, specialized transmission experts may be required to diagnose and repair complex or severe transmission problems. These specialists have in-depth knowledge and experience working with different transmission systems and can offer valuable insights and solutions. Seeking out expert transmission specialists can provide peace of mind in addressing challenging transmission issues.


Proper maintenance and prompt action are crucial in resolving transmission problems in the 2017 GMC Sierra 1500. Regular inspections and necessary repairs can help extend the life of the transmission and ensure optimal vehicle performance. By being aware of the common transmission problems, their causes, symptoms, and possible solutions, owners can take proactive steps to prevent issues and maintain the longevity of their vehicles.

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