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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1539 (Engine Cooling System - Non-Hybrid) >> Diagnostic Information and Procedures >> Diagnostic Code Index

Diagnostic Code Index

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC CODE INDEX

DTC Description
DTC P0480 or P0481 (without HP2)  P0480: Cooling Fan Relay 1 Control Circuit
P0481: Cooling Fan Relay 2 and 3 Control Circuit
DTC P0480, P0481, or P0482 (with HP2)  P0480: Cooling Fan Relay 1 Control Circuit
P0481: Cooling Fan Relay 2 Control Circuit
P0482: Cooling Fan Relay 3 Control Circuit
DTC P1258  P1258: Engine Coolant Over temperature - Protection Mode Active
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