20 Most Recent 2006 Hummer H3 Questions & Answers


Check the wires crossing the valve cover about midway ,under the crossover air pipe,,,especially if the plastic wire looms are deteriating ,,think the wires go to the egr not sure,,,check the wires for rub marks if any repair,,if the wire or wires are bad it will throw al kinds of crazy codes, delete codes see if it fixed it,,,also vacuum leaks will cause this issue to,,cracked rubber connectors and such
see YouTube vid. H3 hummer reduced power fix
taterhead3e

2006 Hummer H3 | Answered on Jul 21, 2019


Your security system has locked u out, do a pass key reset, if this does not work then u will need the dealer to test the system for a failed part.

PASSKEY LOCKOUT RESET GM (yes it is GM) CARS 1999 UP
1) Put the key in the ignition and turn to the "ON" position. Leave it that way for 10 minutes. After 10 minutes turn the key and take it out. Repeat this process (2) more times (3 times, 30 minutes total) This should reset the passlock system to recognize your key.

2006 Hummer H3 | Answered on Apr 10, 2019


If the squealing is coming from under the hood while the engine in running then it could be a number of things such as an idler bearing, water pump bearing, or possibly an air conditioner or alternator bearing. Other possibilities are belts that are worn or have gotten wed from a bad water pump or have loosened up because of a bad belt tensioner. Take a long bar and touch each area that seems to be making the noise. If you can feel the vibration or hear the squeal when you touch the area, then you found your noise.

2006 Hummer H3 | Answered on Feb 12, 2019


plz google it or u can easily find on youtube with video demo to help u out

2006 Hummer H3 | Answered on Jan 08, 2019


either a small electronic issue or some physical problem with 4 wheel drive, plz see a qualified mechanic

2006 Hummer H3 | Answered on Jan 08, 2019


The ticking sound is known by GM and they left it. It is actually a lifter waiting to get enough oil to pump it up correctly. As the motor gets older this will continue longer and longer as more lifters join in. The engine will start sounding like a sewing machine. Simple Replace the oil pump with a High Volume High Pressure one, all lifter ticking will go away. Put in three of them now.

2006 Hummer H3 | Answered on Dec 26, 2018


what was the soution to this problem? thanks!

2006 Hummer H3 | Answered on Nov 10, 2018


just adjustment on the shift

2006 Hummer H3 | Answered on Nov 03, 2018


My 2006 Hummer H3 is not coming out of lock position. Indicator light says its in the normal 4 wheel drive but it doesn't feel like that when i am making a hard turn. I tried driving in reverse as well as letting it sit in the garage overnight. What is prob?

2006 Hummer H3 | Answered on Oct 24, 2018


see a technician. u can t do urself

2006 Hummer H3 | Answered on Oct 07, 2018


start car, put brake, shift to Drive, then try to change modes, it should work for u

2006 Hummer H3 | Answered on Oct 07, 2018


any online site in USA selling hummer parts shows alll parts u need

2006 Hummer H3 | Answered on Oct 07, 2018


problem with remote setting after battery change, open and set keypad again with circuit and try again

2006 Hummer H3 | Answered on Oct 07, 2018


there along with front axle

2006 Hummer H3 | Answered on Oct 07, 2018


steering rack assembly needs to be repaired/replaced

2006 Hummer H3 | Answered on Oct 07, 2018

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