Electrical - Testing Prior to Alternator/Battery R and I: Overview
Bulletin No.: 02-06-03-006BDate: November 10, 2004
TECHNICAL
Subject:
No Start, No Crank, Battery, Batteries, Generator, Gages, SES, SIR, Brake, Security, Theft, ABS, Hot, DIC Messages, Lamp, Light, Battery and Generator Diagnostic Testing, and Cadillac Roadside Service, Warranty Claims Procedure (Proper Diagnostic Procedures)
Models:
2003-2005 HUMMER H2
Supercede:
This bulletin is being revised to add the 2004 and 2005 model years. Please discard Corporate Bulletin Number 02-06-03-006A (Section 06 - Engine).
IF YOU WISH TO PRINT THE ELECTRICAL SYSTEM DIAGNOSTIC WORK SHEET ONLY IT IS SHOWN..
Condition
Some customers may have comments regarding any one or more of the following conditions:
1. Intermittent illumination of one or more of the following instrument panel warning lamps:
^ SES light
^ Generator light
^ SIR light
^ Brake light
^ Security, theft light
^ ABS light
^ Hot light
2. Gage readings which seem to be incorrect.
3. Erratic RPM display on the Tachometer.
4. Engine is difficult/hard to start.
5. Engine will not crank.
6. Check Generator displayed on the Driver Information Center.
7. The transmission shifts hard.
8. Noise underhood: growl, rattle, hiss/tapping, grinding.
Quality improvement is a goal of General Motors. As part of the ongoing quality improvement assessment efforts for generators and batteries, General Motors is implementing a new product feedback process.
Generator/Battery Service/Feedback Process
Accurate feedback from technicians will allow General Motors to accurately inspect and diagnose batteries and/or generators replaced in the field.
Why? Testing of the batteries and the generators replaced and returned to General Motors have shown that an extremely high percentage of them are operating within design specifications, also known as Trouble Not Found (TNF).
Therefore, General Motors is modifying the battery and generator testing procedure and supporting documents required when a battery or generator is replaced under warranty.
Disclaimer