Test Description

The number below refers to the step number on the diagnostic table.

1. 4. This step tests for the proper vehicle speed signal from the PCM.
   Fig 1: Speedometer And/Or Odometer Inaccurate Or Inoperative (Steps 1-8)

   Courtesy of GENERAL MOTORS CORP.
   Fig 2: Speedometer And/Or Odometer Inaccurate Or Inoperative (Steps 9-11)

   Courtesy of GENERAL MOTORS CORP.