Chevrolet Silverado Technical Service Bulletin Database: What Every Owner Should Know
Technical Service Bulletins are your insider track to known Silverado issues—and knowing about them can save you time, money, and frustration.
You know that feeling when something doesn’t seem quite right with your truck, but the dealership says “we couldn’t reproduce the issue”? Sometimes the problem is already documented, and your technician just needs the right bulletin number. Here’s the thing about TSBs—they’re not recalls, but they’re the next best thing. They tell you what’s known, what’s been fixed, and how to get it sorted.
TL;DR
Chevrolet has issued over 4,500 Technical Service Bulletins for the Silverado 2500 alone across all model years . TSBs are official repair procedures for known issues—unlike recalls, they’re not mandatory but are often covered under warranty. Major documented issues include the “engine won’t shut off” problem (TSB PIT6489), the “Chevy Shake” driveline vibration, 8-speed transmission shudder, and a recent do-not-drive recall for transfer case issues on 2026 models . Always check your VIN at NHTSA.gov for open TSBs and recalls affecting your specific truck.
What Exactly Is a Technical Service Bulletin?
A TSB is an official communication from Chevrolet to its dealership service departments . It describes a known problem, provides step-by-step diagnostic procedures, and gives the exact repair instructions. Think of it as a cheat sheet for your mechanic.
The key difference from recalls: Recalls address safety defects and are always free. TSBs address common issues that aren’t necessarily safety-critical—but if your truck is still under warranty, the repair is often covered.
Silverado TSB Counts by Year
The number of TSBs varies dramatically by model year. Here’s what the data shows for the Silverado 2500 :
| Model Year | TSB Count | Percentage of Peak |
|---|---|---|
| 2015 | 1600 | 100% |
| 2014 | 1214 | 76% |
| 2013 | 1123 | 70% |
| 2012 | 1161 | 73% |
| 2011 | 1072 | 67% |
| 2016 | 1069 | 67% |
| 2010 | 964 | 60% |
| 2009 | 857 | 54% |
| 2008 | 862 | 54% |
The 2015 model year has the most TSBs, which means it’s either the most problematic or the most thoroughly documented—or both.
Major Documented Silverado Issues
The “Engine Won’t Shut Off” Problem (PIT6489)
Imagine pulling into your driveway, hitting the ignition button to turn off your truck, and the engine just keeps running. It sounds like a nightmare, but it’s a real, documented issue .
The cause: A voltage back feed from the Fuel Pump Driver Module keeps the engine’s critical systems awake .
The fix: Disconnect and replace the K111 Fuel Pump Drive Control Module .
Affected trucks: 2019-2023 Silverado 1500 and HD models with gas engines (L82, L84, L87, LV3, L3B, and L8T) . Duramax diesels are NOT affected.
The “Chevy Shake” (PI1354I and 16-NA-175)
For nearly a decade, GM full-size trucks have carried a reputation for what drivers call the “Chevy Shake”—an unsettling vibration at highway speeds .
This actually covers two separate problems:
Driveline vibration (2014-2019 Silverado 1500s): A vibration at 60-70 mph caused by a slightly out-of-balance aluminum driveshaft . GM’s diagnostic process is outlined in Preliminary Information bulletin PI1354I.
Transmission shudder (8-speed automatics): A vibration that feels like riding over rumble strips, caused by torque converter clutch issues . GM issued Service Bulletin 16-NA-175 for this, with the fix being a full fluid flush using Mobil 1 Synthetic LV ATF HP .
The 6.2L V8 Engine Recall (N242477760)
For 2021-2024 Silverado 1500s with the 6.2L L87 engine, GM issued a recall over engine failure concerns . The NHTSA received over 28,000 complaints about engine failure and 14,000 allegations of propulsion loss .
The fix: Dealers inspect the engine. If it passes, they’ll give it a higher viscosity oil, a new oil cap, and an oil filter. If it fails, the engine is repaired or replaced—all free of charge .
Transfer Case Lock-Up (2026 Model Recall)
This one is serious. GM issued a do-not-drive recall for certain 2026 Silverado 1500, Tahoe, and Suburban models with 4WD or AWD .
The cause: A missing oil pickup tube inside the transfer case can prevent proper lubrication, leading to sudden wheel lock-up .
The number: Only 66 vehicles are affected, but GM has received four complaints related to the issue .
What to do: If your VIN is flagged, call your dealer and arrange for a tow—do not drive the vehicle in yourself .
Other Notable TSBs
Hydro-Boost brake issues (PIT3665H): For 1998 Silverados, if the brake pedal moves or applies on its own at a full turn, the Hydro-Boost unit needs replacement .
USB charging issues (22-NA-238): Some 2020 Silverados have cellphone charging or USB receptacle problems .
Back-up alarm inoperative (PIT5386K): Some trucks equipped with the Back Up Alarm (RPO 8S3) may have an inoperative alarm during Pre-Delivery Inspection .
FAQ: Your TSB Questions Answered
1. What is the difference between a TSB and a recall?
A recall is for safety defects and is always free. A TSB documents known issues and provides repair procedures—repairs are usually covered only if your vehicle is under warranty .
2. How do I find TSBs for my Silverado?
Visit NHTSA.gov and enter your VIN. You can also check Chevrolet’s owner center or use sites like CarComplaints.com and GM-Trucks.com .
3. Is the “engine won’t shut off” issue covered under warranty?
Yes, if your truck is still within its warranty period. This repair falls under the vehicle’s Emission coverage .
4. What is the “Chevy Shake” and is it covered?
The “Chevy Shake” can refer to driveline vibration or transmission shudder. Repairs may be covered under warranty if the dealer can reproduce the issue and confirm it meets GM’s criteria .
5. Should I worry about the 6.2L V8 engine recall?
If you own a 2021-2024 Silverado 1500 with the 6.2L L87 engine, check your VIN at NHTSA.gov. GM will repair or replace affected engines free of charge .
6. Are TSBs publicly available?
Yes. By law, manufacturers must make TSBs available to the public. You can find them on NHTSA’s website and many third-party sites .
Stay Ahead of Known Issues
TSBs are your best tool for staying informed about your Silverado. They tell you what’s been documented, what’s been fixed, and what you should watch out for. Whether you’re under warranty or paying out of pocket, knowing the right bulletin number can make all the difference.
What’s your experience with Silverado TSBs? Have you had a known issue fixed under warranty? Drop your stories in the comments—it helps everyone learn from real-world experience.
References & Further Reading:
