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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 P0776 or P0777 >> Component Testing

Component Testing

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.
PC Sol 2 Operation

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