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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 924 (Engine Controls And Fuel - 6.6L (LMM) - Diagnosis & Troubleshooting) >> Fuel Return System Diagnosis >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different car, the 2007 GMC Sierra, 2007 GMC Cab & Chassis Sierra, 2007 Chevrolet Silverado, and 2007 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Bent or pinched fuel return lines may cause an external fuel leak or engine performance concerns.

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