Diagnostic Aids

If code is intermittent, see INTERMITTENTS in TESTS W/O CODES article in this section. Check customer driving habits and/or unusual traffic conditions (i.e., stop-and-go expressway traffic).

Fig 1: CODE 38, Schematic, Brake Switch Stuck Off

Courtesy of GENERAL MOTORS CORP.

Fig 2: CODE 38, Flowchart, Brake Switch Stuck Off

Courtesy of GENERAL MOTORS CORP.