Diagnostic Procedure

WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: DTC P0230: Fuel Pump Control Relay Circuit (Steps 1-4)

Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC P0230: Fuel Pump Control Relay Circuit (Steps 5-15)

Courtesy of GENERAL MOTORS CORP.