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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 4L60-E/4L65-E (Service & Replacement) >> Diagnostic Information and Procedures >> DTC P1810: Invalid State Of The TFP Manual Valve Position Switch Circuit >> Test Description

Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. 3. This step compares the indicated range signal to the selected manual valve position.
  2. 5. This step tests for correct voltage from the PCM to the AT inline 20-way connector.
Fig 1: DTC P1810 Diagnosis (Steps 1-2)
G01565745Courtesy of GENERAL MOTORS CORP.
Fig 2: DTC P1810 Diagnosis (Steps 3-9)
G01565746Courtesy of GENERAL MOTORS CORP.
Fig 3: DTC P1810 Diagnosis (Steps 10-17)
G01565747Courtesy of GENERAL MOTORS CORP.
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