Question about 2003 Hummer H2

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Where is the fuel filter on 1 2003 h2? - 2003 Hummer H2

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It should be in the left frame rail near the gas tank. if not there check on fire wall in engine compartment. hope this helps

Posted on Aug 01, 2009

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2003 Hummer H2 acts like it is not getting enough gas. Will run and when press pedal backs off like not enough fuel. Have changed mass air flow sensor as directed by code reader,fuel pump, fuel filter...


try replacing the ignition coils and spark plugs, as a last resort try replacing the ecm that may also be the problem you may be able to get parts from a recycler its cheaper than the dealer

Jan 20, 2015 | 2003 Hummer H2

1 Answer

How to find location for H2 SUV fuel filter 2006 model


The Hummer has its fuel pump and filter inside the tank

Aug 24, 2014 | 2006 Hummer H2 SUV

1 Answer

H2 fuel filter location 2006 SUV model


It is located right in front of the Fuel tank.

Aug 24, 2014 | 2006 Hummer H2 SUV

1 Answer

How to replace a fuel filter on a 2003 hummer h2


very easy,just remove the old one and put new one,but make sure you put it exactely like d fomal one

Jul 10, 2014 | 2003 Hummer H2

2 Answers

I began to have issues with my '05 Hummer H2 a few weeks ago.....


P0496 = "Evaporative emission system high purge flow"


At the dealership, we get a lot of complaints like yours and they all started with running too low on fuel or running out.


Start with replacing the fuel filter and get back to me.


Running low/out tends to suck up micro trash from the bottom of the gas tank and that gunk clogs the fuel filter.

Feb 02, 2013 | 2005 Hummer H2 SUV

1 Answer

2008 h2 won't start


Most overlooked cause for this concern is an extremely dirty factory (not aftermarket) air filter. Remove the factory air filter and blow out the debris still inside the box so the engine doesn't **** it in. Make sure all the air box tube clamps are tight and the MAF sensor is still plugged in good. Then try to start it without the air filter in. If it still does the same thing, unplug the MAF sensor and try to restart. If it starts only after the MAF was unplugged then you need a MAF sensor. Check these things and let me know what happens.
I hope this info helps!~subyguru~

May 07, 2012 | 2008 Hummer H2

1 Answer

Engine looses power or stalls intermittently. replaced throttle sensor still having problems. any ideas?


if gas engine could be as simple as air and or fuel filter to possibly a melted catalitic converter, if diesel , start with fuel filter and air filter

Apr 12, 2011 | 2005 Hummer H2

1 Answer

Not running smooth 90,000


Sounds like you need a tuneup. Change the plugs, wires, pcv, fuel filter, oil and oil filter, and air filter.
These are the most likely causes, if the problem still exists then you will want to check the fuel pressure at the rail, and make sure all vacuum line are in good shape.

Jan 12, 2010 | 2003 Hummer H2

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