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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1048 (Automatic Transmission - 6L50/6L80/6L90 - DTC P0218 To DTC P0971) >> DTC P0796 or P0797 >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection .

PC Sol 3 Operation

Exercise Normal Operation Stuck OFF Stuck ON
Steady State Gears 1st Braking 4, 5, 6 1st Braking, 4, 5, 6 1st Free Wheel, Neutral 1st Braking, 4, 5, 6
Steady State Gears, 1 Free Wheel 2, 3 1st Free Wheel, 2, 3 1st Free Wheel, 2, 3 1st Braking, 4, 5, 6
Garage Shift Park/Neutral to Reverse/Drive Neutral 1st Free Wheel Drive Gear
Downshift from gears 4, 5, 6 to 1, 2, 3 1st Free Wheel, 2, 3 1st Free Wheel, 2, 3 1st Braking, 4, 5, 6
Upshift from gears 1, 2, 3 to 4, 5, 6 4, 5, 6 Neutral 4, 5, 6