TSB: CHEVROLET AVALANCHE, SIERRA, SIERRA DENALI, SILVERADO, SUBURBAN, TAHOE, YUKON, YUKON DENALI, YUKON DENALI XL, YUKON XL (2012)

Bulletin PI1343B - January 26, 2016

Bulletin Details

Bulletin IDPI1343B
ManufacturerCHEVROLET
ModelsAVALANCHE, SIERRA, SIERRA DENALI, SILVERADO, SUBURBAN, TAHOE, YUKON, YUKON DENALI, YUKON DENALI XL, YUKON XL
Model Years2012
Date IssuedJanuary 26, 2016
Date Added to NHTSAAugust 15, 2017
ComponentPOWER TRAIN:AUTOMATIC TRANSMISSION
Vehicles Affected20 combinations

What is a TSB?

A Technical Service Bulletin is a document issued by the vehicle manufacturer to inform dealership technicians about a known issue and the recommended repair procedure. TSBs are not mandatory recalls, they serve as repair guidance for common problems.

If your vehicle has this issue, bring this bulletin ID to your dealer. If under warranty, the repair should be covered at no cost.

Summary

This preliminary informational bulletin provides a procedure to reset the transmission adapts and test drive in additon to a transmission control module reprogram to correct a harsh or tie up feeling from 6-4 downshift

Affected Vehicles

MakeModelYearComponent
CHEVROLET AVALANCHE 2012 103100 POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
CHEVROLET AVALANCHE 2012 103000 POWER TRAIN:AUTOMATIC TRANSMISSION
GMC SIERRA 2012 103000 POWER TRAIN:AUTOMATIC TRANSMISSION
GMC SIERRA 2012 103100 POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
GMC SIERRA DENALI 2012 103100 POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
GMC SIERRA DENALI 2012 103000 POWER TRAIN:AUTOMATIC TRANSMISSION
CHEVROLET SILVERADO 2012 103100 POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
CHEVROLET SILVERADO 2012 103000 POWER TRAIN:AUTOMATIC TRANSMISSION
CHEVROLET SUBURBAN 2012 103100 POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
CHEVROLET SUBURBAN 2012 103000 POWER TRAIN:AUTOMATIC TRANSMISSION
CHEVROLET TAHOE 2012 103000 POWER TRAIN:AUTOMATIC TRANSMISSION
CHEVROLET TAHOE 2012 103100 POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
GMC YUKON 2012 103100 POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
GMC YUKON 2012 103000 POWER TRAIN:AUTOMATIC TRANSMISSION
GMC YUKON DENALI 2012 103000 POWER TRAIN:AUTOMATIC TRANSMISSION
GMC YUKON DENALI 2012 103100 POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
GMC YUKON DENALI XL 2012 103000 POWER TRAIN:AUTOMATIC TRANSMISSION
GMC YUKON DENALI XL 2012 103100 POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
GMC YUKON XL 2012 103000 POWER TRAIN:AUTOMATIC TRANSMISSION
GMC YUKON XL 2012 103100 POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)

Related CHEVROLET Recalls

CampaignModelYearComponentSummary
SILVERADO 2500 2025 TIRES:PRESSURE MONITORING AND REGULAT... General Motors, LLC (GM) is recalling certain 2024-2025 Chevrolet Silverado 2...
SILVERADO 2500 2024 TIRES:PRESSURE MONITORING AND REGULAT... General Motors, LLC (GM) is recalling certain 2024-2025 Chevrolet Silverado 2...
SILVERADO EV 2026 TIRES:TEMPORARY/EMERGENCY SPARE TIRE General Motors, LLC (GM) is recalling certain 2026 Chevrolet Silverado EV and...
SILVERADO EV 2026 ELECTRICAL SYSTEM:PROPULSION SYSTEM:T... General Motors, LLC is recalling certain 2026 Cadillac Escalade IQ, Escalade ...
EXPRESS 2026 STEERING General Motors, LLC (GM) is recalling certain 2025-2026 Express, and 2025-202...

What Should You Do?

If your vehicle is affected by this TSB, contact your authorized CHEVROLET dealer. Bring this bulletin ID (PI1343B) when you visit. If under warranty, the repair should be free. If your warranty has expired, ask about goodwill coverage, manufacturers sometimes cover TSB-related repairs beyond the warranty period.

Frequently Asked Questions

A recall is a mandatory safety fix, the manufacturer must repair every affected vehicle for free. A TSB is an advisory document that describes a known issue and the recommended fix, but repairs are not required. However, some TSBs eventually lead to recalls if the issue poses a safety risk. TSBs are generally issued for quality or performance problems, while recalls address safety defects.

If your vehicle is still under the manufacturer's warranty, TSB-related repairs are typically covered at no cost. If your warranty has expired, you can ask the dealer about goodwill or customer assistance programs. Many manufacturers will cover or partially cover repairs for well-known issues, especially if the TSB was issued recently or affects a large number of vehicles.

Check the make, model, and model year listed above against your vehicle. If they match, this bulletin likely applies. However, TSBs may only affect vehicles with specific production dates, VIN ranges, or configurations. Your dealer can confirm by entering your VIN into their service system, which will show all applicable TSBs and recalls.

This data comes from the National Highway Traffic Safety Administration (NHTSA). Manufacturers are required to submit copies of all communications (including TSBs) sent to their dealers to NHTSA. The agency makes this data publicly available as part of its vehicle safety monitoring program.