Non-SRS Wiring Repairs: General Motors

What is a non-SRS wiring repair? It is the repairing of an electrical component that is not part of the supplemental restraints system circuit (usually identified by yellow wire looms). As technology increases on vehicles, so does the number of components that utilize electricity. Many of the sensors and modules are becoming smarter and more sensitive. If the wire is too long, the wrong gauge, or spliced in the wrong location it can cause malfunctions in the components that it’s powering. Many OEMs have different restrictions and guidelines for repairing wiring that does not control SRS components. On the other hand, there are OEMs that don’t allow wiring repairs at all, so full harness replacement is the only option.

GM provides procedures of wiring repairs that can be performed. To find these repair procedures, go to Click on the Find Document by its ID link and search for document ID 2160816 to reach the Wiring Repairs page. To get vehicle specific information, search for a vehicle within the wiring repairs document. Within each individual link on the page, there are warnings and directions for each repair.

Examples of information from the 2018 GMC Acadia Wiring Repairs document are: Heated Oxygen Sensor: Per the 2018 GMC Acadia Wiring Repairs Document: “Caution: Do not solder repairs under any circumstances as this could result in the air reference being obstructed.”

Wire-to-Wire Repair: Per the 2018 GMC Acadia Wiring Repairs Document: “Cut as little wire off the harness as possible. You may need the extra length of wire in order to change the location of a splice. Adjust splice locations so that each splice is at least 40 mm (1.5 in) away from the other splices, harness branches, or connectors.”

There are many more documents and information with vehicle specific guidelines for repairing a non-SRS wiring system.

It is important to read the service and repair manuals to make sure what repairs can be carried out and where, to achieve a complete, safe, and quality repair.

For additional GM information, check out the following pages:
Chevrolet OEM Information
GMC OEM Information
Buick OEM Information
Cadillac OEM Information

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