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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1380 (Automatic Transmission - 6L80/6L90 - DTC P0967 To DTC P2764) >> DTC P1626 >> Conditions for Setting the DTC >> Fail Case 1

Fail Case 1

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The TFP Switch 3 or TFP Switch 4 is pressurized with the commanded gear 1st - engine braking and the IMS indicates a 01 (Invalid) transitional state for 8 seconds or more.

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