What is the transmission problem on the Chevy Express?

The Chevy Express is a popular full-size van known for its reliability and versatility. However, like any vehicle, it can experience transmission issues that require attention. In this article, we'll explore the common transmission problems associated with the Chevy Express and provide guidance on how to diagnose and address them.

Common Transmission Problems in the Chevy Express

The Chevy Express is equipped with either a 4-speed automatic or a 6-speed automatic transmission, depending on the model year and engine configuration. Some of the most frequently reported transmission problems with the Chevy Express include:

• Slipping or Delayed Gear Engagement: This issue can be caused by low transmission fluid levels, worn clutch plates, or a malfunctioning solenoid.


• Harsh Shifting: Rough or jerky gear changes can indicate a problem with the transmission's internal components, such as worn bands or clutches.


• Transmission Fluid Leaks: Leaks can lead to low fluid levels and further transmission damage if not addressed promptly.


• Transmission Overheating: Excessive heat buildup in the transmission can cause premature wear and failure of internal components.

These issues can manifest in various ways, such as difficulty shifting gears, a slipping or shuddering sensation, or the transmission failing to engage properly.

Diagnosing Transmission Problems in the Chevy Express

To diagnose transmission problems in the Chevy Express, it's essential to follow a systematic approach:

• Check Transmission Fluid Level and Condition: Inspect the transmission fluid level and ensure it is within the recommended range. Also, check the fluid for any signs of contamination or discoloration, which may indicate an underlying issue.li>
  
• Perform a Road Test: Take the vehicle for a test drive and pay attention to any unusual noises, vibrations, or shifting behavior. This can help pinpoint the specific problem.li>
  
• Utilize Diagnostic Codes: Use an OBD-II scanner to check for any diagnostic trouble codes related to the transmission. These codes can provide valuable clues about the underlying problem.


• Inspect for Leaks: Carefully inspect the transmission and surrounding areas for any signs of fluid leaks, which can contribute to transmission issues.

By following these steps, you can effectively diagnose the root cause of the transmission problem and determine the appropriate course of action.

Addressing Transmission Issues in the Chevy Express

Once the transmission problem has been identified, the next step is to address it. Depending on the severity of the issue, this may involve:

• Refilling or Replacing Transmission Fluid: If the fluid level is low or the fluid is contaminated, a simple fluid change or flush may resolve the problem.


• Replacing Faulty Components: If the issue is caused by a specific component, such as a solenoid or clutch, replacing the affected part may be necessary.


• Transmission Rebuild or Replacement: In more severe cases, the transmission may require a complete rebuild or replacement, which should be performed by a qualified technician.

It's important to address transmission problems promptly to prevent further damage and ensure the continued reliable operation of your Chevy Express.

What is the recall on the Chevy Express?

Recent Chevy Express recalls include a software update for 2022-2023 models to fix issues with the transmission control module, a recall for some 2025 models due to an improperly welded driver-side door impact beam, and a separate recall for 2025 models involving a potential issue with the front passenger seat head restraint not being properly welded. For the most accurate and personalized information, use your 17-digit Vehicle Identification Number (VIN) on the NHTSA website. 
Recent recalls

• 2022-2023 Chevy Express (Transmission Software):
  • Issue: Incorrect software in the transmission control module can cause harsh shifting, reduced power, unintended deceleration, or rear wheel lock-up, potentially leading to a crash. 
  • Fix: Dealers will update the transmission control module software for free. 
• 2025 Chevy Express (Driver's Door Impact Beam):
  • Issue: Some 2025 models have improperly welded impact beams in the driver's side door, which may not perform as intended in a side-impact crash. 
  • Fix: Dealers will replace the driver's side door and apply seam sealer if needed. 
• 2025 Chevy Express (Front Passenger Head Restraint):
  • Issue: The head restraint on the front passenger seat may not have been properly welded to the seat frame, increasing the risk of injury in an accident. 
  • Fix: Dealers will inspect the head restraint and replace the front passenger seat frame if necessary. 

How to check for recalls

• Visit the NHTSA website and enter your vehicle's 17-digit VIN to see if your specific vehicle is under any recall. 
• Contact a GM authorized dealer to have them check for recalls and perform the necessary repairs at no cost to you. 

What happens right before your transmission goes out?

You can tell your transmission is about to go out by listening for unusual noises like grinding or whining, and by observing issues like slipping gears, delayed or harsh shifting, or hesitation when accelerating. Other signs include a burning smell, transmission fluid leaks, and the illumination of the "Check Engine" light. 
Symptoms of a failing transmission

• Unusual sounds: Listen for grinding, whining, clunking, or humming noises. A loud or rough sound when shifting gears is a major warning sign. 
• Shifting problems:
  • Slipping: Your car may feel like it's shifting gears on its own, especially when accelerating. 
  • Hesitation or delay: There may be a noticeable delay when shifting into gear or when the engine revs before a gear change. 
  • Rough or hard shifts: Shifts may feel jerky or harsh instead of smooth. 
• Fluid issues:
  • Leaking fluid: A red or brown puddle under your car could indicate a transmission fluid leak. 
  • Burning smell: A sweet, burning smell often points to overheating transmission fluid. 
• Warning lights: The "Check Engine" light or a dedicated transmission warning light can come on to indicate a problem with the transmission. 
• Performance issues:
  • The vehicle may be slow to accelerate or feel sluggish. 
  • The car may not move when you put it in gear and press the gas pedal. 

What to do
If you experience any of these symptoms, have your vehicle inspected by a professional mechanic as soon as possible. Driving with a failing transmission can lead to more severe and costly damage.

What is the transmission problem with the Chevy Express?

Common Chevy Express transmission problems include slipping, delayed or hard shifting, and gear engagement failures, which are often caused by low or dirty transmission fluid, faulty solenoids or sensors, or worn internal components like clutch packs. A 2017 Customer Satisfaction Program (N232428780) addresses prematurely wearing control valve body ball check valves, while a specific NHTSA investigation targets 6L90 transmissions in 2016-2018 and 2021-2022 cutaway models due to a similar issue.
 
Common symptoms

• Slipping: The transmission feels like it's not fully engaging, especially under load or acceleration. 
• Delayed or hard shifting: There is a noticeable pause or jolt between gear changes. 
• No gear engagement: The vehicle will not move into drive or reverse. 
• Erratic shifting: The transmission frequently upshifts and downshifts without warning. 
• Strange noises: Buzzing, whining, or humming sounds coming from the transmission. 

Common causes and solutions

• Low or dirty transmission fluid: This is a very common cause of slipping and shifting problems. 
  • Solution: Check the fluid level and condition. If low, add the correct fluid. If the fluid is dirty, a fluid and filter change is recommended. 
• Faulty shift solenoids or control module: These components control hydraulic pressure for shifting. 
  • Solution: Have a diagnostic scanner check for related error codes. A professional may need to test or replace the solenoids or the control module. 
• Worn internal components: Clutch packs and valve bodies can wear out over time. 
  • Solution: This may require a more extensive repair or rebuild. A professional should diagnose if internal components are the issue after other potential causes are ruled out. 
• Transmission range sensor (TRS): This sensor tells the computer the vehicle's gear selection. 
  • Solution: A faulty sensor can cause no-gear engagement issues. A scan tool can help diagnose a bad TRS. 
• Shifter linkage issues: A broken or misaligned linkage can prevent the transmission from engaging correctly. 
  • Solution: Inspect the linkage and bushings for damage. On some models, a worn shifter cable bushing can be the cause. 
• GM-specific issues:
  • 6L90 transmission (2016-2018 and 2021-2022 cutaway models): An investigation found that premature wear of valve body check balls can cause transmission failures. 
  • 2017 and 2021 models: A Customer Satisfaction Program addresses issues with the control valve body check valves, notes GM Authority. 
  • Brake Pedal Position (BPP) sensor: In some 2012-2015 models, an improperly learned BPP sensor can cause erratic shifting.
    • Solution: The Engine Control Module (ECM) may need to be reprogrammed, says Reddit users. 

What year does a Chevy have transmission problems?

Several Chevrolet model years have been reported to have transmission problems, including the 2015–2019 Silverado models with eight-speed transmissions, 2016–2018 and 2021–2022 Chevy Express cutaway vans with the 6L90 transmission, and 2019–2021 Blazers with 9T65 transmissions. Other model years associated with transmission complaints include some 2002, 2011, 2012–2017, and 2014 Silverados, notes Municibid and RealTruck. 
This video discusses some 10-speed transmission issues in Chevy Silverado and Sierra models: 59sThe Car Guy OnlineYouTube · Nov 14, 2024
Specific models and years with reported issues

• Chevrolet Silverado:
  • 2015–2019: Owners reported shuddering, slipping, or hard shifting due to issues with the eight-speed automatic transmission (8L90/8L45). 
  • 2012–2017: Had a significant number of transmission complaints. 
  • 2014: Was the worst model year for the 1500 series, with many transmission complaints. 
  • 2002: Also cited as having transmission-related complaints, according to Municibid. 
• Chevrolet Express/GMC Savana cutaway vans:
  • 2016–2018 and 2021–2022: Subject to a National Highway Traffic Safety Administration (NHTSA) investigation into the 6L90 transmission, which can lead to power loss, transmission failure, and issues with the valve body. 
• Chevrolet Blazer:
  • 2019–2021: Affected by defects in the 9T65 nine-speed automatic transmission, which can cause slipping between first and second gear, a high-pitched noise, and torque converter slippage. 
• Chevy Tahoe:
  • 2016 and 2017: Owners reported transmission failures around the 100,000-mile mark, as shown in this Facebook post. 

You can watch this video to learn about the 10-speed transmission problems in GM vehicles, including Chevy and Cadillac models: 59sThe Car Guy OnlineYouTube · Feb 21, 2025