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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 220 (Automatic Transaxle Diagnosis - 4T65-E) >> Diagnostic Tests >> DTC P1811: Maximum Adapt & Long Shift >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 Buick Regal and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

The numbers listed below refer to step numbers in the diagnostic procedure:

  1. 7  - This step inspects components that may cause low line pressure.
  2. 9  - This step inspects or repairs components that may cause a maximum adapt and long 1-2 upshift.
  3. 11  - This step inspects or repairs components that may cause a maximum adapt and long 2-3 upshift.
  4. 13  - This step inspects or repairs components that may cause a maximum adapt and long 3-4 upshift.

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