Rainier AWD L6-4.2L VIN S (2005)
Radiator Cooling Fan Motor: Customer Interest
Electrical - SES Lamp ON/DTC's P0480/P0526/P1481/P1484
Bulletin No.: 05-06-02-012B
Date: October 19, 2006
TECHNICAL
Subject:
Service Engine Soon (SES) or Check Engine Light On, DTC P0480/P0526/P1481/P1484 Set (Replace Engine Cooling Fan Wiring Harness)
Models:
2004-2006 Buick Rainier
2002-2006 Chevrolet TrailBlazer, TrailBlazer EXT
2002-2006 GMC Envoy, Envoy XL
2004-2005 GMC Envoy XUV
2005-2006 GMC Envoy Denali, Envoy XL Denali
2002-2004 Oldsmobile Bravada
2005-2006 Saab 9-7X
Supercede:
This bulletin is being revised to add DTC P1484. Please discard Corporate Bulletin Number 05-06-02-012A (Section 06 - Engine/Propulsion System).
Condition
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.
Cause
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.
Correction
Replace the engine cooling fan harness using the procedure listed below.
Remove the cooling fan. Refer to the Cooling Fan and Shroud Replacement procedure in the Engine Cooling sub-section of SI.
Place the cooling fan assembly on a bench.
Disconnect the harness electrical connector from the cooling fan clutch.
Remove the harness from the plastic guide while feeding the wires out of the slot.
Before installing the new harness, wrap the affected area on the wires with electrical tape to keep the protective sleeve in place. Be sure to keep the tape
