Diagnostic Aids

Check all connections, especially those at the transmission pass-thru connector.

Fig 1: DTC 83 Schematic - 1994 Diesel

Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC 83 Schematic - 1994 Gasoline

Courtesy of GENERAL MOTORS CORP.

Fig 3: DTC 83 Flow Chart - 1994

Courtesy of GENERAL MOTORS CORP.