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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 934 (Automatic Transmission - 6L50/6L80/6L90 - DTC P0218 To DTC P0990) >> DTC P0842 or P0843 >> Circuit/System Verification

Circuit/System Verification

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

If there are any other transmission related DTCs set, diagnose those DTCs first.

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