# Service bulletin 15435A

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: 10089971
- Published by NHTSA: 2017\-01\-31
- Manufacturer's number: 15435A
- Manufacturer's date: 2015\-06\-17
- NHTSA component: POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER

## NHTSA's summary

15435A \- SERVICE UPDATE \(REVISED SERVICE PROCEDURE\). THIS BULLETIN PROVIDES A SERVICE PROCEDURE TO REPLACE THE TORQUE CONVERTER ON CERTAIN 2015 MODEL YEAR CHEVROLET SILVERADO HD, GMC SIERRA HD AND GMC SIERRA DENALI HD VEHICLES EQUIPPED WITH AN ALLISON 6\-SPEED AUTOMATIC TRANSMISSION \(RPO MW7\). THESE VEHICLES MAY HAVE BEEN ASSEMBLED WITH AN INCORRECTLY MACHINED TORQUE CONVERTER. CUSTOMERS MAY EXPERIENCE NOISE, POOR PERFORMANCE AND, IF THIS CONDITION IS NOT CORRECTED, EVENTUAL TRANSMISSION FAILURE.

## 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, Torque converter

## Vehicles listed

- 2015 CHEVROLET SILVERADO 2500
- 2015 CHEVROLET SILVERADO 3500
- 2015 GMC SIERRA 2500
- 2015 GMC SIERRA 3500

## Other bulletins for the same vehicles and component

- [14876](/bulletins/10247240.md), 2023-12-18, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:FLOOR SHIFT. 8\-speed Transmission Harsh Shift
- [17\-NA\-066](/bulletins/10239647.md), 2023-07-25, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN. This service bulletin provides information for automatic transmission Oil Cooler Flush and flow test.
- [16\-NA\-130](/bulletins/10232711.md), 2023-03-08, Service bulletin: POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:VALVES/VALVE BODY. 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](/bulletins/10224285.md), 2022-10-17, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); POWER TRAIN. 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](/bulletins/10201118.md), 2021-09-07, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Recovery Process from a Controller Reprogramming Interruption
- [06\-00\-89\-031D](/bulletins/10201098.md), 2021-09-07, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN; ENGINE. OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification
- [990420002L](/bulletins/10200154.md), 2021-08-09, Service bulletin: POWER TRAIN:MANUAL TRANSMISSION; POWER TRAIN:AUTOMATIC TRANSMISSION; EQUIPMENT. This service bulletin provides information on Driveline Clunk Noise and what is acceptable and what is considered normal operation.
- [06\-00\-89\-031D](/bulletins/10190503.md), 2021-04-20, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE. OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification
- [15\-NA\-083](/bulletins/10190387.md), 2021-04-20, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Recovery Process from a Controller Reprogramming Interruption During service reprogramming of the T87 TCM, some technicians may notice the TCM may fail during the reprogramming event and become unresponsive to the Service Programming System \(SPS\), unresponsive to the GDS2 tool. This bulletin addresses corrective actions to attempt to recover the module before declaring the TCM as a bad part and replacing. During reprogramming, an interruption can cause the module to lock up. A module reset may recover the TCM
- [16\-NA\-175](/bulletins/10190229.md), 2021-04-13, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:INTERNAL:GEARS; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. SHAKE AND/OR SHUDDER DURING LIGHT THROTTLE ACCELERATION BETWEEN 40 AND 128 KM/H \(25 AND 80 MPH\) AT A STEADY STATE.

JSON: [/v1/bulletins/10089971](/v1/bulletins/10089971)

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