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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 70 (Engine Controls Self-Diagnostics - 4.3L) >> Diagnostic Tests >> DTC P1258: Engine OVERTEMPERATURE >> Diagnostic Procedures

Diagnostic Procedures

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 GMC Sonoma, 2002 GMC Safari, 2002 GMC Jimmy, 2002 Chevrolet S10 Pickup, and 2002 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Did you perform the Diagnostic System Check-Engine Controls? If yes, go to next step. If no, see DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS  under SELF-DIAGNOSTIC SYSTEM.
  2. Check the engine cooling fan for proper operation. Does the engine cooling fan operative properly? If yes, repair engine overheating. If no, repair engine cooling fan.
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