G 3500 1 Ton Van V8-350 5.7L VIN L 4-bbl (1985)
![background image](/gmc/g_3500_1_ton_van/v8-350_5.7l_vin_l_4-bbl/Page-730006.png)
^
If the vehicle is equipped with a fuel module, the module must be disconnected before performing the fuel system pressure test. Refer to
SECTION 4 of the Fuel and Emissions Manual.
^
Fuel system is under pressure. To avoid fuel spillage, refer to procedures in SECTION 4 for testing or making repairs requiring disassembly of
fuel lines or fittings.
^
On V6 or V8 engines, the fuel pressure drops to almost zero psi after pump shuts "OFF".