iFixit - Answers With Device "2005-2010 Hummer H3"

2005-2010 Hummer H3: Drivers side window,power door locks wont work

Sat, 16 Aug 2025 11:08:55 -0700

Hard to start yesterday,drivers side window,power door locks wont work,either by buttons on both doors or on key fob.Other windows work! Replaced Battery checked door lock fuse,still no drivers side window or door locks.

⟐ Commented August 16, 2025 at 11:08 MST

2005-2010 Hummer H3: How to replace a front turn signal?

Fri, 21 Aug 2020 11:02:08 -0700

How do you access the front turn signal to change the bulb on a H3?

⟐ Commented August 21, 2020 at 11:02 MST

2005-2010 Hummer H3: My break lights wont turn off

Fri, 23 Nov 2018 12:33:27 -0700

my break lights wont turn off even when the car is completely off.. Ive tried unplugging battery and that didnt do anything. please help!

⟐ Comment deleted November 23, 2018 at 12:33 MST

2005-2010 Hummer H3: How to change the Transmission Fluid according to GM's manual?

Sat, 17 Oct 2015 23:14:19 -0700

Does GM recommend dropping the transmission pan when replacing the transmission fluid?

Does Gm recommend replacing the pan gasket once the pan has been dropped?

My dealer didn't drop the pan....and I want him to complete the maintenance the way the GM manual says to do it.

⟐ Answer deleted October 17, 2015 at 23:14 MST

2005-2010 Hummer H3: How to replace blower fan

Mon, 19 Aug 2019 12:48:13 -0700

where and how do you replace a heater-A/C blower fan.

⟐ Commented August 19, 2019 at 12:48 MST

2005-2010 Hummer H3: How to replace squeaking belt pulley.

Sat, 30 Dec 2017 16:03:48 -0700

My 2006 H3 just started squeaking on startup and continues for several minutes while driving. How do I replace the pulley that is squeaking. I am not sure what it is called, but it is the one that is on the top left when looking at the engine from the front.

⟐ Answer edited December 30, 2017 at 16:03 MST

2005-2010 Hummer H3: Sun roof will not move.

Fri, 23 Dec 2016 08:12:44 -0700

Sun roof will not move from the closed position, fuse is good. Is there a motor to check.

⟐ Answer accepted December 23, 2016 at 8:12 MST

2005-2010 Hummer H3: need serpentine belt routing diagram

Sat, 07 Jan 2023 18:29:20 -0700

need serpentine belt diagram h3 5cyl. 2008 hummer

⟐ Answered January 07, 2023 at 18:29 MST

2005-2010 Hummer H3: My truck won't move in any gear

Wed, 08 Oct 2025 02:03:10 -0700

If I put it in drive it won't move the driveshaft won't turn

⟐ Answer edited October 08, 2025 at 2:03 MST

2005-2010 Hummer H3: Windshield Outer Molding Seperation

Tue, 07 Jan 2020 03:18:50 -0700

We have a 2006 Hummer H3 that the windshield molding has seperated from the top rail molding. How to move the top rail molding forward about 1/8” so the front screw will fit back in the molding. That area has broken, it looks like the molding on both sides has moved back about 1/8” and can’t reconnect the windshield molding back to it.

⟐ Answer edited January 07, 2020 at 3:18 MST

2005-2010 Hummer H3: Park lights won’t turn off

Wed, 01 Jan 2020 19:35:17 -0700

Park lights stay on after vehicle is turned off

⟐ Answered January 01, 2020 at 19:35 MST

2005-2010 Hummer H3: How do I repair dock door lock the rod came out of the handle

Sun, 10 Mar 2019 11:22:21 -0700

h 3 hummer dock door lock assembly rod came out of the handle how do you put it back togther

⟐ Answered March 10, 2019 at 11:22 MST

2005-2010 Hummer H3: Under the dash AC Housing Unit

Fri, 02 Dec 2016 08:21:30 -0700

Under the dash board there is a housing unit for the air conditioner. Where is it located exactly and how do I get to it?

⟐ Answer accepted December 02, 2016 at 8:21 MST

2005-2010 Hummer H3: Hummer H3 torque settings

Wed, 16 Nov 2016 08:11:55 -0700

Does anyone know the torque settings for the flex plate and knock sensor for a 3.5L Hummer H3

⟐ Answer accepted November 16, 2016 at 8:11 MST

2005-2010 Hummer H3: How to change the running lights

Tue, 27 Dec 2011 04:35:38 -0700

What do you have to remove to change running light on h3 hummer

⟐ Answer accepted December 27, 2011 at 4:35 MST

2005-2010 Hummer H3: How to replace the transfer case on a Hummer H3 2007?

Wed, 23 Jul 2025 11:31:26 -0700

I got a light on in my panel ( car zigzagging icon) my mechanic says that it has to do with the transfer case being faulty, so I was wondering if there’s a tutorial on how to fix or replace the transfer case in my Hummer H3 2007

2005-2010 Hummer H3: 2007 hummer h3 door lock remote?

Mon, 21 Nov 2022 20:24:17 -0700

how to manually program remote for 2007 hummer h3 door locks?

⟐ Edited by author November 21, 2022 at 20:24 MST

2005-2010 Hummer H3: check engine light p0452

Mon, 21 Mar 2022 01:04:41 -0700

change my fuel pump ,vapor canister ,vapor canister vent hose ,vapor canister purge valve , yet still im getting p0452 code when i scan my 2006 hummer h3 idk what else to also i replaced fuel pump wiring harness with replacement wiring and not sure if i did the wiring correctly but vehicle starts and runs and drives but that cant get rid of the p0452 code

⟐ Commented March 21, 2022 at 1:04 MST

2005-2010 Hummer H3: Fob will not program

Sat, 27 Mar 2021 09:11:50 -0700

Key fob procedure don't work,the driver's door doesn't do the procedure

⟐ Edited by author March 27, 2021 at 9:11 MST

2005-2010 Hummer H3: Why is mileage artificially increasing every time I start car?

Tue, 19 Feb 2019 10:58:04 -0700

Every time we start car the odometer and trip meter jump ahead about 10 miles. Any idea why? Anyone else have this problem? Thanks