GM Service Manual Online
For 1990-2009 cars only

Info - Instrument Panel (I/P), Body and General Wiring Harness Repair

Subject:Instrument Panel (I/P), Body and General Wiring Harness Repair

Models:2007 and Prior GM Cars and Trucks
2003-2007 HUMMER H2
2006-2007 HUMMER H3



Important: A part restriction has been implemented on all Body and I/P harnesses and is being administered by the PQC. If a body or I/P harness replacement is required, it can take 12-28 weeks for a harness to be built and delivered to a dealer. The dealer technician is expected to repair any harness damage as the first and best choice before replacing a harness.

In an effort to standardize repair practices, General Motors is requiring that all wiring harnesses be repaired instead of replaced. If there is a question concerning which connector and/or terminal you are working on, refer to the information in the appropriate Connector End Views in SI. The Instruction Manual J 38125-620, which is sent with each new update of the J 38125 Terminal Repair Kit, also has terminal crimping and terminal remove information.

Important: There are some parts in the J 38125 Terminal Repair Kit (i.e. SIR connector CPAs and heat shrink tube (used in high heat area pigtail replacement) and some TPAs that are not available from GMSPO. It is vitally important that each update to the J 38125 Terminal Repair Kit be done as soon as it arrives at the dealer.

Utilize the Terminal Repair Kit (J 38125) to achieve an effective wiring repair. The Terminal Repair Kit has been an essential tool for all GM Dealers since 1987. Replacement terminals and tools for this kit are available through SPX/Kent Moore at 1-800-GM-TOOLS (1-800-468-6657). Refer to Corporate Bulletin Number 06-08-45-001 for more information.

The Instruction Manual J 38125-620, which is sent with each new update to the J 38125 Terminal Repair Kit, also has terminal crimping and terminal removal information.

U.S. Dealers Only -- Training courses (including Tech Assists, Emerging Issues, Web, IDL and Hands-on) are available through the GM Training website. Refer to Resources and then Training Materials for a complete list of available courses.

Canadian Dealers Only -- Refer to the Training section of GM infoNet for a complete list of available courses and a copy of the J 38125 Terminal Repair Kit Instruction Manual.

Wiring repair information is also available in Service Information (SI). The Wiring Repair section contains information for the following types of wiring repairs:

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Testing for intermittent conditions and poor conditions

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Flat wire repairs

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GMLAN wiring repairs

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High temperature wiring repairs

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Splicing copper wire using splice clips

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Splicing copper wire using splice sleeves

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Splicing twisted or shielded cable

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Splicing inline harness diodes