# Service bulletin 021001

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: 627865
- Published by NHTSA: 2002\-02\-25
- Manufacturer's number: 021001
- Manufacturer's date: 2001\-10\-02
- NHTSA component: ELECTRICAL SYSTEM:IGNITION:MODULE

## NHTSA's summary

INFORMATION REGARDING ENGINE SOON LAMP BEING ILLUMINATED FOR DIAGNOSTIC TROUBLE CODE,P0014, P1683 OR P0116 A DELAYED TRANSMISSION DOWNSHIFT AND/OR EXCESSIVE FAN NOISE. \*YH

## 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, Ignition

## Trouble codes named

P0014, P0116, P1683

## Vehicles listed

- 2002 CHEVROLET TRAILBLAZER
- 2002 GMC ENVOY
- 2002 OLDSMOBILE BRAVADA

## Other bulletins for the same vehicles and component

- [050730021](/bulletins/10017381.md), 2005-11-05, Service bulletin: ELECTRICAL SYSTEM:IGNITION:SWITCH. IGNITION KEY WILL NOT REMOVE FROM IGNITION LOCK CYLINDER. \*TT
- [3216](/bulletins/10010618.md), 2004-12-02, Service bulletin: ELECTRICAL SYSTEM:IGNITION. ERRATIC OPERATION OF PERSONALIZATION WITH IGNITION CYCLE. \*EH
- [020846005](/bulletins/634678.md), 2002-10-04, Service bulletin: ELECTRICAL SYSTEM:IGNITION:MODULE. SUBJECT REGARDNG THE ADDITION OF DIAGNOSTIC TROUBLE CODE U1500 FOR GENERATION 4 ONSTAR. \*TT
- [300801](/bulletins/625359.md), 2001-11-20, Service bulletin: ELECTRICAL SYSTEM:IGNITION:MODULE. INFORMATION REGARDING UNRESOLVED DTC P0014, FALSE DTC P0116 AND P1683. \*YH

JSON: [/v1/bulletins/627865](/v1/bulletins/627865)

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