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Home >> Pontiac >> 2003 >> Grand Prix GTP >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel, Gages, And Console >> Diagnostic Information and Procedures >> Diagnostic System Check - Audible Warnings >> Test Description

Test Description

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 U1000-U1305 indicate some other module is not communicating on the class 2 serial data circuit. The specified procedure will compile all the available information before tests are performed.
    Fig 1: Audible Warnings Diagnostic System Table
    G01503528Courtesy of GENERAL MOTORS CORP.