For 1990-2009 cars

# Battery and Charging System Electrical Diagnostics

Subject: | Battery and Charging System Electrical Diagnostics

Models: | 1997-2009 GM Passenger Cars and Trucks

| 2003-2009 HUMMER H2

| 2006-2009 HUMMER H3

| EXCEPT Electric Vehicles and Hybrid Truck

Attention: | This bulletin does not apply to Saturn and Saab models.

This bulletin is being revised to add model years. Please discard Corporate Bulletin Number 05-06-03-002B (Section 06 - Engine/Propulsion System).

### Changing Diagnostic Strategy

The previous electrical diagnostic worksheet provided in GM Corporate Bulletin Numbers 02-06-03-006B, 02-06-03-011 and 02-06-03-012 is no longer required when diagnosing battery and charging system concerns.

Battery and charging system diagnostic information provided by these bulletins has been incorporated into SI and the printed Service Manuals for 2007 model year and later vehicles.

### New Information on Electrical Diagnosis

Specific electrical diagnostics are available for each vehicle line in SI. Please refer to Engine Electrical Diagnostics within Engine Electrical.

### New Labor Times for Battery and Generator Diagnostics

With the deletion of the previously required electrical diagnostic worksheet, the ADD time allowances for the following labor operations have been revised. The warranty chart below updates the ADD conditions for the following labor operation numbers. These times are effective immediately.

### Warranty Information

For vehicles repaired under warranty, use:

Labor Operation | Description | Labor Time with ADD Times
--- | --- | ---
N0110 | Battery, Replace | Use Published Labor Operation Time
Add: | Battery Test -- Single Battery | 0.0-0.3 hr
N0117 | Battery, Replace - Two Battery System | Use Published Labor Operation Time
Add: | Battery Test - Dual Battery | 0.0-0.4 hr
J4100 | Generator, Replace | Use Published Labor Operation Time
Add: | Battery and Generator Test | 0.0-0.5 hr