# Service bulletin 09\-04\-21\-005D

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: 10037687
- Published by NHTSA: 2011\-06\-03
- Manufacturer's number: 09\-04\-21\-005D
- Manufacturer's date: 2011\-01\-01
- NHTSA component: POWER TRAIN:DRIVELINE

## NHTSA's summary

GM: THE SERVICE 4WD LIGHT IS ON AND A TROUBLE CODE IS SET. THIS IS A SOFTWARE PROBLEM. \*RM

## 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

## Vehicles listed

- 2006 to 2009 HUMMER H2 SUT
- 2006 to 2010 HUMMER H3

## Other bulletins for the same vehicles and component

- [04\-06\-01\-029K](/bulletins/11011205.md), 2024-12-04, Service bulletin: POWER TRAIN; STEERING; ENGINE. This informational bulletin explains Unscheduled Supplemental Services and the importance of GM Simplified Maintenance Schedules.
- [08\-07\-30\-026I](/bulletins/11009088.md), 2024-10-24, Service bulletin: POWER TRAIN. This service bulletin provides information on some vehicles that may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be accompanied by a clunk noise. This is a slight movement that is more often seen visually, rather than felt, when viewed from the outside and using the auto\-start feature, if equipped.
- [99\-04\-20\-002O](/bulletins/11005311.md), 2024-07-30, Service bulletin: POWER TRAIN. This service bulletin provides information on Driveline Clunk Noise and what is acceptable and what is considered normal operation.
- [08\-07\-30\-035H](/bulletins/11001321.md), 2024-06-07, Service bulletin: POWER TRAIN. This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid.
- [15\-00\-89\-004G](/bulletins/11000119.md), 2024-05-15, Service bulletin: ENGINE; SUSPENSION; POWER TRAIN. This service bulletin provides technicians with information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
- [990420002I](/bulletins/10250082.md), 2024-02-12, Service bulletin: POWER TRAIN. Information on Driveline Clunk Noise
- [PI1394B](/bulletins/10249579.md), 2024-02-02, Service bulletin: POWER TRAIN; ENGINE AND ENGINE COOLING. This PI bulletin advises the technician on the proper way to install the pistons in an engine.
- [090730018C](/bulletins/10246593.md), 2023-12-11, Service bulletin: POWER TRAIN. Warranty Administration ? Change in Automatic Transmission Add Condition Documentation and Claim Submission
- [990420002I](/bulletins/10246569.md), 2023-12-11, Service bulletin: POWER TRAIN:DRIVELINE. Information on Driveline Clunk Noise
- [110604007C](/bulletins/10245749.md), 2023-12-04, Service bulletin: EXTERIOR LIGHTING; POWER TRAIN. Diagnosis and Repair \- Malfunction Indicator Lamp \(MIL\) Illuminated, Reduced Engine Power Message Displayed, DTC P2135 Set

JSON: [/v1/bulletins/10037687](/v1/bulletins/10037687)

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