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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 834 (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

WARNING: This page is about a different car, the 2003 GMC Yukon XL, 2003 Chevrolet Suburban, and 2003 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

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 20-way connector.
    Fig 1: Diagnostic Trouble Code (DTC P1810) Table (1-6)
    G02112056Courtesy of GENERAL MOTORS CORP.
    Fig 2: Diagnostic Trouble Code (DTC P1810) Table (7-16)
    G02112057Courtesy of GENERAL MOTORS CORP.
    Fig 3: Diagnostic Trouble Code (DTC P1810) Table (17-18)
    G02112058Courtesy of GENERAL MOTORS CORP.
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