A/C OR HEATER WIRE HARNESS MAY BE CUT BY IGNITION COIL

VEHICLES AFFECTED: 1985 'F' Series With LQ9 2.5L L-4 Engine

CONDITION:

---------- The A/C or heater wire harness may be cut by the ignition coil, approximately four inches (100 mm) from where the harness comes through the bulkhead. This can result in a loss of A/C or heater operation.

CAUSE:

------ Harness is routed too close to the ignition coil.

CORRECTION:

----------- Use the procedure below to correct this condition.

1. Disconnect negative battery cable.

2. Hoist vehicle.

3. Repair any damaged wires, if wires are cut and must be soldered to repair, use 'other labour hours' for additional time.

4. Tape harness in repaired area with electrical tape.

5. Drill a 1/8 inch hole (3.2mm) in the bulkhead, between the grommet and heater case, slightly above the grommet.

6. Attach clip, (P/N 9787673 or equivalent) to bulkhead using screw, P/N 11504874 or equivalent), (M 4.2 x 1.41 x 13 self-tapping).

7. Attach wire harness to clip, making sure harness is at least one inch (25 mm) from ignition coil.

8. Lower vehicle.

9. Reconnect negative battery cable.

Use the most applicable labour operation from the Canadian Labour Time Guide and claim 0.3 hours.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.