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Test Description

WARNING: This page is about a different car, the 2003 Oldsmobile Aurora. 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. 2. Lack of communication may be due to a partial malfunction of the class 2 serial data circuit or due to a total malfunction of the class 2 serial data circuit. The specified procedure will determine the particular condition.
  2. 4. The presence of DTCs which begin with "U" indicate some other module is not communicating. The specified procedure will compile all the available information before tests are performed.
  3. 7. The presence of DTCs which pertain to the ABS/TCS system must be diagnosed first. The specified procedure will compile all the available information before tests are performed.
  4. 9. The presence of DTCs which pertain to the transaxle must be diagnosed after any ABS/TCS codes. The specified procedure will compile all the available information before tests are performed.
Fig 1: Diagnostic System Check-Cruise Control (Steps 1 To 3)
G01507522Courtesy of GENERAL MOTORS CORP.
Fig 2: Diagnostic System Check-Cruise Control (Steps 4 To 9)
G01507523Courtesy of GENERAL MOTORS CORP.