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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1737 (Automatic Transmission - ALLISON - DTC P0218 To DTC P0878) >> DTC P0708 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify the range selector lever cable adjustment is correct; refer to Range Selector Lever Cable Adjustment .
  2. Ignition ON, engine OFF, move the shift selector lever through all the ranges. With a scan tool, verify the TR Sw. A/B/C/P parameters match the IMS A, B, C, and P circuit states in the transmission IMS logic table. Refer to Transmission Internal Mode Switch Logic .
  3. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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