TSB: CADILLAC ESCALADE, ESCALADE ESV, SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 2500, SILVERADO 3500, YUKON, YUKON DENALI, YUKON DENALI XL, YUKON XL (2015)

Bulletin 15178A — May 1, 2015

Bulletin Details

Bulletin ID15178A
ManufacturerCADILLAC
ModelsESCALADE, ESCALADE ESV, SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 2500, SILVERADO 3500, YUKON, YUKON DENALI, YUKON DENALI XL, YUKON XL
Model Years2015
Date IssuedMay 1, 2015
Date Added to NHTSAJanuary 31, 2017
ComponentPOWER TRAIN:MANUAL TRANSMISSION
Vehicles Affected22 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

15178A - SERVICE UPDATE (REVISED PARTS INFORMATION, SERVICE PROCEDURE AND WARRANTY TRANSACTION INFORMATION). THIS BULLETIN PROVIDES A SERVICE PROCEDURE TO PERFORM A DRIVE AUDIT AND, IF NECESSARY, REPLACE THE REACTION/OUTPUT CARRIER ASSEMBL

Affected Vehicles

MakeModelYearComponent
CADILLAC ESCALADE 2015 102000 POWER TRAIN:MANUAL TRANSMISSION
CADILLAC ESCALADE 2015 103000 POWER TRAIN:AUTOMATIC TRANSMISSION
CADILLAC ESCALADE ESV 2015 102000 POWER TRAIN:MANUAL TRANSMISSION
CADILLAC ESCALADE ESV 2015 103000 POWER TRAIN:AUTOMATIC TRANSMISSION
GMC SIERRA 1500 2015 102000 POWER TRAIN:MANUAL TRANSMISSION
GMC SIERRA 1500 2015 103000 POWER TRAIN:AUTOMATIC TRANSMISSION
GMC SIERRA 2500 2015 102000 POWER TRAIN:MANUAL TRANSMISSION
GMC SIERRA 2500 2015 103000 POWER TRAIN:AUTOMATIC TRANSMISSION
GMC SIERRA 3500 2015 102000 POWER TRAIN:MANUAL TRANSMISSION
GMC SIERRA 3500 2015 103000 POWER TRAIN:AUTOMATIC TRANSMISSION
CHEVROLET SILVERADO 2500 2015 102000 POWER TRAIN:MANUAL TRANSMISSION
CHEVROLET SILVERADO 2500 2015 103000 POWER TRAIN:AUTOMATIC TRANSMISSION
CHEVROLET SILVERADO 3500 2015 103000 POWER TRAIN:AUTOMATIC TRANSMISSION
CHEVROLET SILVERADO 3500 2015 102000 POWER TRAIN:MANUAL TRANSMISSION
GMC YUKON 2015 103000 POWER TRAIN:AUTOMATIC TRANSMISSION
GMC YUKON 2015 102000 POWER TRAIN:MANUAL TRANSMISSION
GMC YUKON DENALI 2015 102000 POWER TRAIN:MANUAL TRANSMISSION
GMC YUKON DENALI 2015 103000 POWER TRAIN:AUTOMATIC TRANSMISSION
GMC YUKON DENALI XL 2015 102000 POWER TRAIN:MANUAL TRANSMISSION
GMC YUKON DENALI XL 2015 103000 POWER TRAIN:AUTOMATIC TRANSMISSION
GMC YUKON XL 2015 102000 POWER TRAIN:MANUAL TRANSMISSION
GMC YUKON XL 2015 103000 POWER TRAIN:AUTOMATIC TRANSMISSION

Related CADILLAC Recalls

CampaignModelYearComponentSummary
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LYRIQ 2026 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER ... General Motors has decided that certain 2027 Chevrolet Bolt EV, 2025-2026 Cad...

What Should You Do?

If your vehicle is affected by this TSB, contact your authorized CADILLAC dealer. Bring this bulletin ID (15178A) 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.