Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
This bulletin is being revised to add DTC P1484. Please discard Corporate Bulletin Number 05-06-02-012A (Section 06 -- Engine/Propulsion System).
Some customers may comment that the Service Engine Soon (SES) or Check Engine light is illuminated. This condition may be intermittent and upon investigation, the technician may find either DTC P0480, P0526, P1481 or P1484 set.
This condition may be caused by the cooling fan harness chaffing against the plastic guide it routes through. This contact may damage the insulation of the wires enclosed in that harness.
Replace the engine cooling fan harness using the procedure listed below.
Harness Assembly, Engine Cooling Fan Wiring