Test Description

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. 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.

3. This step compares the indicated range signal to the selected manual valve position.
5. This step tests for correct voltage from the PCM to the AT inline 20-way connector.

Fig 1: DTC P1810 - 5.3L (Steps 1-2)

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Fig 2: DTC P1810 - 5.3L (Steps 3-9)

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Fig 3: DTC P1810 - 5.3L (Steps 10-17)

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