# Service bulletin PIT\-4539\-T

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: 10078609
- Published by NHTSA: 2016\-08\-11
- Manufacturer's number: PIT\-4539\-T
- Manufacturer's date: 2016\-04\-06
- NHTSA component: ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR

## NHTSA's summary

THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION ON THE DRIVE MOTOR GENERATOR CONTROL MODULE PART RESTRICTION. DEALER WILL NEED TO CALL GM TECHNICAL ASSISTANCE CENTER FOR FURTHER INSTRUCTIONS.

## 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

Electrical system, Alternator

## Vehicles listed

- 2009 to 2013 CADILLAC ESCALADE
- 2009 to 2013 CHEVROLET SILVERADO 1500
- 2008 to 2013 CHEVROLET TAHOE
- 2009 to 2013 GMC SIERRA 1500
- 2008 to 2013 GMC YUKON

## Other bulletins for the same vehicles and component

- [PI1404](/bulletins/10113512.md), 2017-08-15, Service bulletin: ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR. This preliminary informational bulletin provides a diagnostic tip for low line pressure or pressure regulator valve stuck after transmission service pump cover replacement.
- [PIT\-4539L](/bulletins/10037569.md), 2011-05-26, Service bulletin: ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR. GM: A DRIVER MOTOR GENERATOR CONTROL MODULE IS BEING PUT ON RESTRICTION. \*RM UPDATED 2/14/12. \*PE

JSON: [/v1/bulletins/10078609](/v1/bulletins/10078609)

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