Question about Hummer H1

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My problem in H1 Hummer is simply the battery is not charging.

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Have you checked alternator by disconnecting pos batterycable while car is on if it stalls ur alternator is no good

Posted on Feb 05, 2010

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1 Answer

How to remove carrier bearing from from prpeller drive shaft on a 2003 H1 Hummer

Do you mean the center support bearing of the two piece driveline?

Sep 20, 2016 | 2003 Hummer H1

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Dear sIR:
pLEASE see the electrical-electronic diagram for ignition and proceed with common sense.


May 15, 2012 | 2002 Hummer H1

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2006 H1 noise in front diff on harde turn

Have the front half shafts(drive axles) inspected. This would be the most likely source of the issue. Let me know if you need anything else.

May 01, 2010 | 2006 Hummer H1

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by law all obd2 connecters are to be under the dash on the drivers side about center. maybe a a little left or right of the steering column

Nov 27, 2009 | 2004 Hummer H1

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Hi want to install a aftermarket stereo in a 99 hummer h1 with a monsoon factory radio in it anybody have a wiring diag?

it is very common to do so however as a h1 tech myself i do not recomend such. it was by design that these monsoon systems drown out some of the decibles created by the diesel engine. if you still decide to do so i can get my manual out of storage and tell you which one are which. email me at

Oct 26, 2009 | 2004 Hummer H1

1 Answer

My 2002 H1, bogs out going up hills. What is wrong?

I never had a Hummer but I can tell you a couple of things to check. Make sure your fuel(every 30000 miles) and air filter are new. The other thing,my 2001 monte carlo needed a new catalitic converter at 44000 miles.It was acting like your Hummer. I had a high-flow type installed. Yours and mine are both GM,maybe they use the same type cat. Have someone push down on the gas petal while you feel the exhaust flow coming out of the tail pipe. The flow should increase as the gas petal goes down.
I hope this helps you.

Sep 10, 2009 | 2002 Hummer H1

1 Answer

What is the adverage time to replace H1 brakes 1998 hummer

Depends on your driving habits. One of the best indicaters if you have never added brake fluid is the level in your master cyclinder. Rotors: if you feel a pulsation in the brake pedal under normal breaking.

Sep 06, 2009 | 2002 Hummer H1

1 Answer

Replacing rear brakes on a hummer h1 2000

ase labor chart shows 3.6 hours normal time for these repairs. avg actual time is 3.5 to 4 hrs and this includes pressure bleeding system.

May 09, 2009 | Hummer H1 Cars & Trucks

1 Answer

Cant figure out which plug leads go where on the coil pack

the hummer h1 have an diesel engine , i think about you never find the spark plugs

Mar 23, 2009 | 2005 Hummer H1

1 Answer

Charging system problem.

go to or Both have an extensive data base of tech info

Feb 10, 2009 | 2002 Hummer H1

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