# Service bulletin PIP5021C

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: 10112011
- Published by NHTSA: 2017\-08\-15
- Manufacturer's number: PIP5021C
- Manufacturer's date: 2014\-01\-21
- NHTSA component: POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION

## NHTSA's summary

This Preliminary Information communication advises the technician that the Allison 6 Speed Automatic Transmission Assembly \(RPO MW7\) have been placed on restriction through General Motors Product Quality Center. Dealer will need to contact General Motors Product Quality Center for further assistance.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2014/MC-10112011-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2014/MC-10112011-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Transmission and driveline, Automatic transmission

## Vehicles listed

- 2013 CHEVROLET SILVERADO
- 2015 CHEVROLET SILVERADO
- 2014 CHEVROLET SILVERADO 1500
- 2013 GMC SIERRA
- 2015 GMC SIERRA
- 2014 GMC SIERRA 1500
- 2014 GMC SIERRA 2500
- 2013 GMC SIERRA DENALI

## Recalls for the same vehicles and component

- [14V152000](/recalls/nhtsa/14V152000.md), 2014-03-31: POWER TRAIN:AUTOMATIC TRANSMISSION:COOLING UNIT AND LINES
- [13V001000](/recalls/nhtsa/13V001000.md), 2013-01-02: POWER TRAIN:AUTOMATIC TRANSMISSION; STEERING:COLUMN LOCKING:ANTI\-THEFT DEVICE

## Other bulletins for the same vehicles and component

- [14204](/bulletins/10248739.md), 2024-01-16, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER. Inner Tie Rod Torque
- [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.
- [PI1154](/bulletins/10191013.md), 2021-04-28, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION. Delayed 1\-2 Upshift While Driving at or Below 15 Percent Throttle Condition/Concern Some customers may comment that during the first few launches after a key cycle, they experience a delayed 1\-2 upshift. If the vehicle has no diagnostic codes, the delay in the 1\-2 shift may be driver induced. If the vehicle has diagnostic codes, address these diagnostic codes prior to using this bulletin. On a level surface if the vehicle is launched from a stop at light throttle \(less than 15%\), then the throttle is closed before reaching 16 km/h \(10 mph\), then the throttle is opened and held to less than 15%, there could be a 1\-2 upshift delay. This delay will last until the vehicle exceeds 24 km/h \(15 mph\) or the driver drops back to closed throttle.
- [PI1150](/bulletins/10190984.md), 2021-04-28, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE. Clicking/Rattle Type Noise from Rear of Engine Some customers may comment on a clicking/rattle type noise coming from the engine compartment. This may be caused by the starter shield contacting the transmission case and causing a rattle

JSON: [/v1/bulletins/10112011](/v1/bulletins/10112011)

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