need to change fuel filter but don't know how to relieve the pressure
Buick Q&AAsk Your Question
2004 Buick Rainier Question: how to release fuel system pressure so i can change the fuel filter
Answer #1cogcan July 29, 2011, 07:42Journeyman
Loosen the fuel filler cap to release the fuel tank pressure.
Remove the fuel pump relay from the junction block.
Crank the engine, allowing it to start and stall.
Crank the engine for an additional 3 seconds to relieve any remaining fuel pressure.