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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 237 (Automatic Transmission - 4L80-E/4L85-E (Service & Replacement)) >> Diagnostic Information and Procedures >> DTC P1810: Invalid State Of The TFP Manual Valve Position Switch Circuit >> Test Description

Test Description

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

  1. 3. This step tests the indicated range signal to the manual valve that is actually selected.
  2. 5. This step tests the voltage from the PCM to the transmission AT inline 20-way connector.
Fig 1: DTC P1810 (1 Of 3)
G02424391Courtesy of GENERAL MOTORS CORP.
Fig 2: DTC P1810 (2 Of 3)
G02424392Courtesy of GENERAL MOTORS CORP.
Fig 3: DTC P1810 (3 Of 3)
G02424393Courtesy of GENERAL MOTORS CORP.
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