Service bulletin 15178A
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service bulletin |
|---|---|
| NHTSA id | 10090000 |
| Published by NHTSA | 2017-01-31 |
| Manufacturer's number | 15178A |
| Manufacturer's date | 2015-05-01 |
| NHTSA component | POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN:MANUAL TRANSMISSION |
NHTSA's 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 ASSEMBLY AND ASSOCIATED PARTS ON CERTAIN 2015 MODEL YEAR CADILLAC ESCALADE, ESCALADE ESV; CHEVROLET SILVERADO LD CREW, SILVERADO LD CREW LTZ, SILVERADO LD EXT LTZ; AND GMC SIERRA LD CREW, SIERRA LD CREW DENALI, SIERRA LD EXT, YUKON, YUKON DENALI, YUKON XL, YUKON XL DENALI VEHICLES EQUIPPED WITH AN 8-SPEED TRANSMISSION (M5U) AND A 6.2L ENGINE (L86). SOME OF THESE VEHICLES MAY EXHIBIT A TRANSMISSION GEAR WHINE NOISE AT 1000-2000 RPM AND BETWEEN 20 MPH (32 KPH) AND 35 MPH (56 KPH).
The document
No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.
Components
Transmission and driveline, Automatic transmission, Manual transmission
| CADILLAC ESCALADE | 2015 |
|---|---|
| CADILLAC ESCALADE ESV | 2015 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 2500 | 2015 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 3500 | 2015 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 1500 | 2015 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 2500 | 2015 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 3500 | 2015 (the catalog's model; the bulletin names a series or trim of it) |
| GMC YUKON | 2015 |
| GMC YUKON DENALI | 2015 (the catalog's model; the bulletin names a series or trim of it) |
| GMC YUKON DENALI XL | 2015 (the catalog's model; the bulletin names a series or trim of it) |
| GMC YUKON XL | 2015 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 14V152000 | 2014-03-31. POWER TRAIN:AUTOMATIC TRANSMISSION:COOLING UNIT AND LINES |
|---|
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| 14876 | 2023-12-18. Service bulletin. 8-speed Transmission Harsh Shift |
|---|---|
| 140730001B | 2023-12-11. Service bulletin. Information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts |
| 140730001 | 2023-12-11. Service bulletin. Information on Transmission Adaptive Functions |
| 17-NA-066 | 2023-07-25. Service bulletin. This service bulletin provides information for automatic transmission Oil Cooler Flush and flow test. |
| 16-NA-130 | 2023-03-08. Service bulletin. This service bulletin provides information for after installation of a replacement upper valve body, the transmission may have no Reverse and no 2nd gear. |
| PIP5621C | 2022-10-17. Service bulletin. This Preliminary information communicates to the dealer technician that TAC recommends the utilization of the GDS2 software to aid in diagnosing automatic transmission concerns. TAC is requesting the GDS2 session logs be sent in before the dealer contacts TAC. |
| 15-NA-083 | 2021-09-07. Service bulletin. Recovery Process from a Controller Reprogramming Interruption |
| 06-00-89-031D | 2021-09-07. Service bulletin. OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification |
| 990420002L | 2021-08-09. Service bulletin. This service bulletin provides information on Driveline Clunk Noise and what is acceptable and what is considered normal operation. |
| 17336-02 | 2021-04-29. Service bulletin. On some 2015-2017 model year Cadillac Escalade, Escalade ESV, Chevrolet Suburban, Tahoe, GMC Yukon and Yukon XL vehicles, may have a condition where thermal cycling on the combination transmission fluid/oil and AC condenser cooler creates a crack that may allow refrigerant to escape. This condition consequently may deactivate the AC system which may cause potential customer annoyance |