Last post on Apr 29, 2012 at 4:45 PM
You are in the Hummer
What is this discussion about?
HUMMER H3, SUV
#1223 of 1272 Re: 2007 Hummer H3 [milhum]
Aug 21, 2008 (6:14 pm)
should be a warantty issue. please post your result.
#1224 of 1272 Re: 2007 Hummer H3 [milhum]
Aug 22, 2008 (6:20 pm)
Reports here or other forums some time back about the wire bundle in the door. Or maybe this tired old brain is failing.
Sep 09, 2008 (8:06 am)
When Driving at low speeds while off-roading with the Air Conditioner on, my H-3 Adventure-Lux often overheats. The dealership mechanics are very capable and well trained and say that they can find nothing wrong with the cooling system. Any Ideas?
#1226 of 1272 Re: Would you get another H3? [tired_old_dave]
Nov 04, 2008 (8:11 pm)
That is debatable, I'm having to bring my H3 to the dealership every week. I've had it there 4 weeks in a row. The problem is that my Service 4 wheel drive keeps coming up. Today I told them if they can't get it right I want a new vehicle. So next week there taking my H3 for 3 days they say and going to check it out again. The first time they checked it out they said they had to replace wiring the second time they said they had to replace a connector then they replaced the moduler in the transfer case........What next???????? Never had another problems with this vehicle. I love driving it except when that darn light comes on to tell me to service 4 wheel drive.
#1227 of 1272 Mirror replacement
Nov 11, 2008 (10:46 am)
How do I replace driver's side mirror on H3? Can't figure out how to get int. panel off.
#1228 of 1272 Hummer won't start sometimes
Nov 24, 2008 (11:54 am)
My H3 won't start sometimes. It doesn't happen often but when it does the engine will crank but it won't start. Also when I let go of the key the engine is still cranking. Usually after about ten minutes it will finally start.
#1229 of 1272 Re: Hummer won't start sometimes [sante65]
Dec 04, 2008 (11:23 pm)
ok, this happened to me twice now.. i'll start from the beginning. A month ago my wife and I decided to go to vegas because gas has gotten so cheap. So we load up the kids, luggage get in and our h3 won't start.. first time this ever happened. We then took everything out and loaded it all in my truck still determined to go since we had hotel reservations paid for. As we were sitting in the front seat, I went over what I did different before the starting problem started. I told my wife I moved the passenger seat all the way forward and put my 4 year old in his big boy seat so my wife could tend to our infant in the back for the drive to vegas..well I got out of the truck, went back in the garage, opened the passenger door, moved the seat back a few inches, put the key in the ignition and bamm.. "it started" so then we loaded everything back in the hummer and off we went..Later I talked to my step father, who is a real grease monkey from the sixties and explained what had happened and he knew right away.. He said my GM product was in "crash mode" due to me moving my seat all the way forward. It thinking I was in a wreck, disabled the engine from starting or in the case of a wreck it would shut down the motor,gas pump and so on.. which leads me to tonight.. earlier I went to the store and again moved the passenger seat forward but this time, not even close to all the way foward. went to the store, came back home and went out to dinner later. lLaving the restaurant we got in and the unthinkable happened again.. It wouldnt start. just cranking and cranking. so I got out moved the passenger seat up,down, back, and forth, reached under the seat and jiggled the wires around."electric seats" reached over and turned the key and It started...and by the way when it would'nt start the first time it happened I would let go the key and for about 3 seconds it would keep cranking.. GM seams to be like ford."They have a better idea"
#1230 of 1272 Re: Hummer won't start sometimes [davemaness]
Dec 29, 2008 (8:35 pm)
Hey this is an excellent explanation.......makes sense to me because my H3 parks on a 60degree incline......
it is very possible that my seats were not moved correctly. I actually went out and bought a new battery!!!! and it still wouldn't start....... then about 15 minutes later, I came out and bam! it started??? OK here is the real test, tomorrow morning when I go to work, I will see if I still get problems.
#1231 of 1272 Re: overheating [jimlee1]
Dec 31, 2008 (7:39 pm)
First thing to check are the electric cooling fans (I assume this vehicle has them). Then check for any blockage to the radiator. If you go through mud and the front of the A/C condenser gets caked with mud, there will be reduced air flow through the radiator.
Keep in mind that the A/C condenser dumps a lot of heat when A/C is operating, and this additional heat makes it harder for the radiator to provide sufficient cooling for the engine.
If the electric fans are good, you may want to consider going to a lower temperature thermostat.