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Wednesday, September 14, 2016

2005 Chevy Express Wiring Harness Fix


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Rubbed the Wrong Way

No way! Can a powertrain control module wiring harness rub through an upper control arm? It has happened and we have the Real Fix to prove it. Don’t spend all day tracing wires and utilize this Real Fix to find the exact location of the damaged wiring harness.

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Vehicle
2005 Chevrolet Chevy Express G3500, 4.8L
Title
Engine Runs Rough, Repaired Powertrain Control Module Wiring Harness
Complaint
The customer states the engine runs rough.
Cause
Confirmed the customer’s complaint and found the engine ran rough. Used a scan tool to monitor live data, performed a road test and found some of the powertrain control module parameters dropped out intermittently. Disconnected the powertrain control module connectors, visually inspected the connectors and terminals and found no obvious signs of damage. Visually inspected the powertrain control module wiring harness and found the harness was rubbed through at the left front suspension upper control arm.

Correction
Repaired the powertrain control module wiring harness and verified the vehicle operated properly. The customer’s concern did not return.

Source
This is a Real Fix from Mitchell 1′s new SureTrack®
expert information source. These documented issues from actual shop repair orders demonstrate how SureTrack can help you correct issues that are not easily diagnosed using OEM information alone. SureTrack is currently available free in our ProDemand product.

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