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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 35 (Automatic Transaxle Diagnosis - 4T65-E) >> Diagnostic Tests >> DTC P1811: Maximum Adapt & Long Shift >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different car, the 2002 Buick Regal, 2002 Buick Century, 2001 Buick Regal, and 2001 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

Ask the customer about possible overloading, exceeding the trailer towing limit, or towing in Overdrive.

Ensure that the current PCM calibration is correct for the final drive ratio.

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