20 Most Recent 2008 Hummer H2 Questions & Answers


Check engine light on , check DTC'S - diagnostic trouble codes ! Check Engine Light On If not familiar with this take it to a ASE certified repair shop or dealer . 3rd limp mode ? Do you have a message in the DIC - driver information center , reduced power mode ?
ENGINE POWER IS REDUCED
Engine Control Module Description for the 4.8L, 5.3L, 6.0L and 6.2L engine

2008 Hummer H2 | Answered on Apr 16, 2016


Drain the oil and see if the coolant is in there. You have a cracked water jacket if it is. If it isn't you need to try and find where the coolant is leaking from.

2008 Hummer H2 | Answered on Feb 21, 2015


we got a 03 h2 and had same problem took to dealer and they said on board air compressor went bad wanted 3000.00 dollars to fix,i said bull and went to strutmasters .com and got the coil spring replacements fixed it for about 300.00 bucks rides perfect and we dont have to worry about those damn rear airbag suspension any more,hope this helps someone

2008 Hummer H2 | Answered on Feb 19, 2015


Same problem here! Did you fix it? If so, how?

2008 Hummer H2 | Answered on Jan 26, 2015


There are wear indicators on the pads that squeal when you apply the brakes. You could look through the wheel and look to see if the rotor is smooth and groove free.
The best way is to remove the wheels and visually check to see how much of the brake pad is left. If you are down to a 1/8 to 3/16th of an inch I would replace the pads.

2008 Hummer H2 | Answered on Apr 01, 2014


can you be more specific?

2008 Hummer H2 | Answered on Sep 06, 2012


near the first cylinder on the drivers side of the motor

2008 Hummer H2 | Answered on Sep 06, 2012


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~

2008 Hummer H2 | Answered on May 15, 2012


Why would you bother with a dealer after the warrantee runs out ?

Never heard of the 200,000 repair shops available,with better
results & cheaper than a dealer.

You can't ask what something costs
You do not have any idea what ,if any problems you may have

2008 Hummer H2 | Answered on Aug 09, 2011


This does need to be scanned properly. It is in the air bag system which with the light on, is now disabled. The computer has sensed a problem with something in the circuit (i.e. belt buckles, clock spring, air bag modules themselves, etc.). If you want to get it scanned and let me know the codes, I can advise you from there.

2008 Hummer H2 | Answered on May 18, 2011

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