Global Wiring Harness Repair Strategy and Parts Information Update

GM’s global repair strategy for large wiring harnesses (body, engine, instrument panel, forward lamp, headliner/roof harness, and truck chassis) is to repair/replace the components (cables, terminals, connectors, etc.) instead of replacing the harness. The repair strategy was developed to help reduce repair costs while reducing squeak and rattle conditions.

GM Customer Care and Aftersales (CCA) has released all required components to repair these harnesses. For connectors that have 8 cavities or less, a fully populated pigtail with the correct DuraSeal splice is available. For all connectors that have 9 cavities or greater, a connector kit, DuraSeal splices and terminated leads are available. (Fig. 3)

For smaller harnesses (door, seat, steering column, etc.), the repair strategy is to replace the harness.


Fig. 3


Part Numbers in Service Information (SI)

The Connector End View section of the Service Information is the source for part number information. (Fig. 4)


Fig. 4


The part information is found just below the connector end view drawing and is presented two ways — the legacy format typically associated with TIFF viewer-supported graphics and the updated format typically associated with CGM viewer-supported graphics. (Fig. 5)


Fig. 5


For larger connectors (9 cavities or greater), the Service Information shows the connector kit and the terminated leads. (Figs. 6, 7)


Fig. 6


Fig. 7


CCA Engineering has been developing videos to help show how to probe and release terminals for these larger harnesses. See below for an example of a connector video. (Fig. 8) These videos are available in the Service Information.


Fig. 8


Electronic Parts Catalog (EPC) Information

Starting with the 2018 model year, all connector kits, pigtails, and terminated leads are called out by book code and model year in the EPC. Updates to the EPC will allow better searchability for wiring repair components. In addition, pictures are being added to the EPC for these parts to help in ordering the correct wire component. (Fig. 9)

Battery cables, infotainment cables and hoses also are listed in the EPC.


Fig. 9


TXL Wire

Use TXL wire to maintain factory specifications for wire harness integrity. TXL wire is available through the Customer Care and Aftersales parts catalog within the Chemical Catalog section. In the EPC, find TXL wire in the Chemicals – Fuses – Wire – book section.

For additional information on wiring repairs, refer to Bulletin #13-00-89-008B.


– Thanks to Tammy Burt and Eric Baur

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One Comment

  1. Andrew Emmanuel says:

    park assist sensor changed and still not workings

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