Notes On INTERMITTENTS

Jump-starting engine or charging battery with a battery charger may set Code 53. If code is set when an accessory is operated, check for poor connections or excessive current draw. Also, check for poor connections at starter solenoid or fusible link.

Fig 1: CODE 53, Schematic, System Voltage High

Courtesy of GENERAL MOTORS CORP.

Fig 2: CODE 53, Flowchart, System Voltage High

Courtesy of GENERAL MOTORS CORP.