Fuel Pump Flow Test
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 1997 GMC Yukon, 1997 GMC Suburban, 1997 GMC Pickup, 1997 GMC Cab & Chassis, and 1997 GMC C3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect fuel line at fuel filter inlet. Disconnect fuel injection pump electric shut-off solenoid wire. See the WIRING DIAGRAMS article.
- Crank engine for 15 seconds. If fuel pump does not supply about1/2 pint of fuel in 15 seconds, go to FUEL SYSTEM PRESSURE TEST.