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Home >> Chevrolet >> 2006 >> Silverado 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 35 (Automatic Transmission - ALLISON - Service, Diagnosis & Troubleshooting) >> FastLearn Procedure >> DRIVE Mode

DRIVE Mode

WARNING: This page is about a different variant/trim than selected.
CAUTION: Block the wheels before selecting DRIVE. While in DRIVE, if the Scan Tool loses communication or becomes disconnected, the vehicle could move forward. Failure to block the wheels could result in personal injury or property damage.

Once all of the PARK test data have converged, the scan tool instructs the driver to select DRIVE. Once DRIVE is selected, the TCM engages the 1-2-3-4 clutch to obtain DRIVE and learn 1-2-3-4 clutch volume. The TCM repeats this test until the volume learned for the 1-2-3-4 clutch has converged. The TCM then engages 4-5-6 clutch until the volume is learned and 4-5-6 clutch has converged.