QuestionHi Jeff,
Is it possible for you to explain on how to properly change a fuel filter for a 03' GMC Yukon. I know you have to depressurize the fuel system first, but I don't know where to begin. Thanks in advance.
AnswerDelbert,
WARNING: Relieve the fuel system pressure before servicing fuel system components In order to reduce the risk of fire and personal Injury. After relieving the system pressure, a small amount of fuel may be released when servicing the fuel lines or connections. In order to reduce the chance of personal Injury, cover the regulator and the fuel line fittings with a shop towel before disconnecting. This will catch any fuel that may leak out. Place the towel In an approved container when the disconnection Is complete .
Disconnect the negative battery cable in order to avoid possible fuel discharge if an accidental attempt is made to start the engine.
Loosen the fuel filler cap in order to relieve the tank vapor pressure.
Connect the gauge J 34730-1A or the equivalent to the fuel pressure connection.
Wrap a shop towel around the fitting while connecting the gauge in order to avoid spillage.
Install the bleed hose into an approved container and open valve in order to bleed the system pressure. The fuel connections are now safe for servicing.
Drain any fuel remaining in gauge into an approved container.
If you dont have a use of the tool then use a shop rag and put over the valve stem in the pressure rail and use a pensil to put the valve in to relieve the pressure. the shop towels will absord the fuel.
The pressure is now released as long as you do not turn the key on. There will be a little fuel coming from the lines from the fuel filter.
Your vehicle could have either a canister type filter which in that case you just put a new canister filter on. If you have a filter cartridge then the take the filter cartridge out and lube the o-ring with some oil and install. Turn the filter canister 3/4 of a turn after contacting the gasket. Thanks and feel free to ask any other questions. Jeff
