Various Driveability Symptoms - Malfunction Indicator Lamp (MIL) Illuminates Intermittently, ABS Light On, DTCs Set, Engine Will Not Start (Repair Wire(s))

This bulletin is being revised to add additional models and model years and to include possible ABS indicator illuminated. Please discard Corporate Bulletin Number 00-06-04-049A (Section 06 - Engine).

Some customers may comment on one or more of the following conditions:

These conditions may be caused from the engine wiring harness chaffing against the mounting ring on the A/C accumulator. This contact may cause a rub through to the wires enclosed in that harness, resulting in the above conditions. Damage to the harness may also result in several stored diagnostic trouble codes.

Inspect and repair any damaged wires. Use the procedure listed below.

Notice: Do not install plastic conduit over the repaired area. Doing so may damage the A/C accumulator.




1. Inspect and repair any damaged wires at the suspected area (1). Refer to Wiring Repairs in the Wiring Systems sub-section of the Service Manual. Wrap the repaired area with 3M® Electrical Moisture Sealant Patches, P/N 06149, or equivalent. Wrap the entire area of contact with friction material , P/N 22617849, to protect it from future damage.
2. Verify proper installation of the harness clamp that attaches the harness to the transmission. Reinstall if necessary.
3. Reposition the repaired harness away from the A/C accumulator. Pull the harness through the clamp at the transmission to remove any slack.

Parts are currently available from GMSPO.

For vehicles repaired under warranty, use: