Chevrolet Traverse Technical Service Bulletins: Common Dealer Fixes
Owning a Chevy Traverse means staying informed about its quirks—Technical Service Bulletins are your best tool for getting common problems fixed without the runaround.
You know that feeling when something seems off with your Traverse, but the dealership says they can’t find the issue? Sometimes the fix is already documented—you just need to know the bulletin number. Here’s the thing about the Traverse: it’s a solid family SUV, but like any vehicle, it has known issues. The smart owners are the ones who walk into the service bay armed with TSB knowledge.
What’s a TSB and Why Should You Care?
A Technical Service Bulletin is an official document from Chevrolet that tells dealership technicians how to diagnose and repair a known problem . Unlike a recall, which is for safety defects and is always free, a TSB covers issues that affect performance or comfort—and repairs are typically only covered if your Traverse is still under warranty.
The key difference? Recalls are mandatory fixes paid for by GM. TSBs are documented repair procedures that can save your technician hours of diagnostic time—and save you money in labor costs.
Common Traverse TSBs by Generation
The Traverse has been around since 2009, and TSBs have evolved with each generation. Here are some of the most frequently documented issues.
First Generation (2009-2017)
If you own an older Traverse, these TSBs might sound familiar:
A/C Odors and Musty Smells
Several bulletins address unpleasant odors coming from the air conditioning system, especially on startup. The fix often involves cleaning the evaporator core and using an odor-eliminating treatment .
Power Steering Fluid Leaks
Extremely low temperatures can cause power steering fluid to leak, and TSBs document the repair procedure to address this condition .
Transfer Case Leaks
AWD models may experience fluid leaks from the transfer case. This issue has its own TSB for proper diagnosis and sealing .
Tire and Wheel Concerns
Multiple bulletins address slow leaks from cast aluminum wheels, tire vibration issues, and proper tire pressure recommendations .
Engine Oil Consumption
This is a well-documented issue across many GM vehicles. TSBs provide diagnostic guidelines and repair procedures for excessive oil consumption .
Driveline Clunk Noise
A clunking noise when shifting or accelerating is documented, and there’s a recommended repair procedure .
Second Generation (2018-2023)
The redesigned Traverse introduced new features—and new TSBs:
Rattling from Under the Hood
According to one owner, a common rattle at idle is addressed by TSB #21-NA-023. The fix is surprisingly simple—the dealer installs two rubber hoses around the purge valve to dampen the noise by about 90% .
USB Charging Issues
If your phone won’t charge or the USB port is dead, TSB 22-NA-238 provides diagnostic and repair steps .
Engine and Transmission Concerns
Bulletins cover rough idle, misfires, and even transmission shift quality. Some are informational—like one for the 8-speed transmission that simply advises the technician that certain shift characteristics are normal .
Valve, Lifter, or Camshaft Issues
TSB 19-NA-219 helps technicians diagnose possible internal engine component problems related to the valve train .
Vibration Diagnosis
A worksheet (TSB 03-00-91-001I) helps technicians diagnose vibration concerns by providing a systematic road-testing procedure .
Third Generation (2024-Present)
The newest Traverse is still working out its bugs. Here’s what owners are experiencing:
Transmission Replacement Recalls and Failures
This is the big one. Some 2024 Traverse models have required complete transmission replacements at very low mileage—in one case, at just 2,000 miles . A Chevrolet Service Update included a recall for transmission issues, though some owners report their VIN wasn’t on the list despite having the problem .
AWD System Warning Light (PIT6479)
A “Service All Wheel Drive” or “Service 4WD” message may appear on the dash. GM issued Preliminary Information bulletin PIT6479 in January to address this .
The workaround: If the warning appears, a dealer can disconnect the 12V battery for 20 minutes to reset the affected module, then reconnect it and clear diagnostic trouble codes. But the message may reappear—GM is still investigating a permanent fix, likely a software update .
A/C Not Working (24-NA-259)
If your air conditioning blows warm air, TSB 24-NA-259 provides a service procedure to correct the issue .
Cellphone Not Charging (22-NA-238)
This bulletin carries over from the previous generation—USB receptacle issues are a recurring theme .
Tail Lamp Inoperative (PIT6308)
If the rear tail light stops working, the preliminary bulletin recommends cycling the fuse. If it works again, the vehicle is returned to the customer—a simple reset .
Vehicle Won’t Power Up After Update (PIT5985G)
If your Traverse won’t start after a failed over-the-air update or a lightning strike, this bulletin provides diagnostic tips .
Common 2025 Traverse Issues (Estimated Costs)
According to warranty data, here are some common problems and their estimated repair costs :
| Issue | Estimated Cost | Factory Warranty? |
|---|---|---|
| Infotainment blackouts | $1,200–$1,800 | Only within 3/36 |
| Rear camera failures | $800–$1,300 | Only within 3/36 |
| Liftgate won’t stay open | $700–$1,100 | Only within 3/36 |
| Transmission hesitation | $1,800–$4,200 | Yes (within 5/60) |
| Lane keep assist issues | $1,400–$2,500 | Only within 3/36 |
How to Use TSBs to Your Advantage
- Find the Bulletin Number: Use NHTSA.gov, TSBsearch.com, or Charm.li to search for TSBs by your Traverse’s year and model .
- Bring It to the Dealer: Having the TSB number can help your technician pinpoint the issue faster—and it shows you’ve done your homework.
- Check Your Warranty Status: If the repair is covered, great. If not, you can still save on diagnostic time by having the bulletin ready.
- Be Patient with New Issues: For 2024-2026 models with the AWD warning light (PIT6479), GM is still investigating. The current reset procedure is a temporary fix .
FAQ: Your Traverse TSB Questions Answered
1. What is the TSB for the Traverse AWD warning light?
Preliminary Information bulletin PIT6479 addresses the “Service All Wheel Drive” message on 2024-2026 Traverses. The temporary fix involves a battery reset .
2. Is there a TSB for Traverse transmission problems?
Yes. There are bulletins for transmission shift quality, clunk noises, and fluid contamination. For 2024 models, some have required full transmission replacements .
3. Where can I find TSBs for my Traverse?
Search NHTSA.gov, TSBsearch.com, or Charm.li using your vehicle’s year and model. Many forums also share TSB numbers .
4. What does TSB 21-NA-023 cover?
This TSB covers a rattling noise from under the hood of certain Traverse models. The fix involves installing rubber hoses around the purge valve .
5. Do I have to pay for a TSB repair?
A TSB repair is only free if your vehicle is still under warranty. If you’re out of warranty, you’ll likely pay out of pocket—but having the bulletin can save diagnostic time .
6. What is TSB 22-NA-238?
This bulletin addresses USB receptacle inoperability or cellphone charging issues. It applies to various Chevrolet models, including the Traverse .
7. Is the AWD warning light issue a recall?
Not yet. It’s a Preliminary Information bulletin (PIT6479), not a full recall. GM is still investigating the cause for a permanent fix .
Staying on top of TSBs keeps you ahead of the curve. Whether you’re dealing with a rattling purge valve or an AWD warning light, knowing the right bulletin number puts you in control.
Have you had a TSB repair on your Traverse? Drop your experience in the comments—it helps other owners know what to expect.
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