Note On Intermittents

If fuel pump test point is grounded, fuse will blow and PCM Code E020 will set. If necessary, replace fuse. Start engine, and allow it to idle. Manipulate affected wiring and connectors. If fault occurs, fuse will blow and engine will stall.

Fig 1: PCM Code E020, Schematic, Open Fuel Pump Circuit

Courtesy of GENERAL MOTORS CORP.

Fig 2: PCM Code E020, Flow Chart, Open Fuel Pump Circuit (3 Of 3)

Courtesy of GENERAL MOTORS CORP.

Fig 3: PCM Code E020 (3 Of 3)