For 1990-2009 cars

# Proper Diagnostic Procedures for No Start, No Crank, Battery, Batteries, Generator, Gauges, SES, SIR, Brake, Security, Theft, ABS, Hot, DIC Messages, Lamp, Light, Battery and Generator Diag. Testing

Subject: | Proper Diagnostic Procedures for No Start, No Crank, Battery, Batteries, Generator, Gauges, SES, SIR, Brake, Security, Theft, ABS, Hot, DIC Messages, Lamp, Light, Battery and Generator Diagnostic Testing

Models: | 1997--2003 Passenger Cars and Light Duty Trucks (Except Electric Vehicles)

| 2003 HUMMER H2

This bulletin is in response to general inquires:

• | About batteries and generators

• | Requirements for the Battery/Generator Diagnostic Work Sheet

• | From National Dealer Council meetings and the Fixed Operations Advisory Board

This bulletin emphasizes two points:

• | Completion of the Electrical System Diagnostic Work Sheet is intended to ensure that only faulty batteries and generators are replaced and to protect dealers from potential charge backs for generator or battery replacements where returned parts inspections reveal No Trouble Found (NTF).

• | To emphasize that we will pay for completion of the Electrical System Diagnostic Work Sheet in the following ways:

- | N0110, Battery R&R, will have the following added to the labor code: ADD -- To complete Electrical System Diagnostic Worksheet - 0.7 hr.

- | J4100, Generator R&R, will have the following added to the labor code: ADD -- To complete Electrical System Diagnostic Worksheet - 0.7 hr.

- | N9995, Customer concern not duplicated. This is a straight time labor operation code and should be used when the Electrical System Diagnostic Work Sheet is completed and no trouble is found with the electrical system of the vehicle. This labor code has the following note: "Actual time from 0.1 to 0.3 hours spent to perform the diagnosis is to be entered as "Labor Hours" for this operation. Any additional diagnosis time greater than 0.3 hours must be submitted as "Other Labor Hours", and have appropriate Service Management approval and authorization".

Several bulletins and TechLink articles have been published in recent months regarding:

• | Charging of Batteries

• | TechLink August 2002, Battery Charging Tips, Volume 4, No. 8

• | Corporate Bulletin Number 02-06-03-009, Battery Charging Tips, August 2002

• | Dealing with Battery Parasitic Drains

• | TechLink April 2002, Volume 4, No. 4

• | Corporate Bulletin Number 02-06-03-010, Informational -- Battery Parasitic Drain, October 2002

• | Generator Operation and Troubleshooting

• | Corporate Bulletin Number 02-06-03-006, No Start, No Crank, Battery, Batteries, Generator, Gauges, SES, SIR, Brake, Security, Theft, ABS, Hot, DIC Messages, Lamp, Light, Battery and Generator Diagnostic Testing, and Cadillac Roadside Service, Warranty Claims Procedure, July 2002

• | TechLink May 2002, Generator Operation and Troubleshooting, Volume 4, No. 5

• | A separate Electrical System Diagnostic Work Sheet bulletin is in process. The Corporate Bulletin Number is 02-06-03-011.

• | A Technology Close-Up training broadcast which will show and discuss the Electrical System Diagnostic Work Sheet will take place on December 19, 2002.