Question about 2007 Hummer H3

1 Answer

Doors lock and unlock while driving and power is taken away.Lights on dash jump back and forth between gears.Occurs more on bumpy road.Been a week and dealer still unable to diagnose cause

Posted by Anonymous on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

  • Contributor
  • 5 Answers

I looks like you have been having a lot of electrical problems with your Hummer. Based on that, I would say that there is a bad/loose ground somewhere. From your description of the problem, it is most likely a bad battery cable.

I suggest you look under the hood and check the battery terminals and cables. I have seen swollen battery cables that are full of corrosion. Especially on side-terminal batteries. If the cable is swollen near the battery terminal, use a razor knife and split the insulation at the point of the swelling and you will see green and/or white corrosion in that area. Replace the cable, because it can cause other problems in the future - no start, no lights, stalling. etc. Also, any loose or corroded wire connections on the inner-fenders and firewall could be in issue.

If everything looks good under the hood, the next thing to check is your ignition switch. I once had a 1995 Pontiac Transport that would stall at red lights/stop signs. After following the above suggestions, I removed the ignition switch and it fell apart in my hand! It was also badly burned inside. After replacing it, the problem was solved.

I have never worked on a Hummer, but since it was a GM product, it is most likely mounted to the steering column , under the dash. You will most likely have to remove 2 bolts that hold the steering column up, and lower the column for access.

Posted on Apr 21, 2015

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

What would cause the doors to randomly lock constant and set security


This is related to communication with the transmission shift "range selector". It is a loose connection that is causing the control module to "see" a park or Neutral and the doors unlock. This may turn on the check engine light also. It may eventuallly cause the transmission to not shift, also. You need to check the connection on the transmission and on the shift range selector (sometimes called the "PRNDL" switch. The computer automatically locks the doors when you select a gear. It is seeing no gear selected and unlocking the doors, the seeing a gear selected again, and locking the doors. You really need to get this repaired soon.

Sep 30, 2014 | 2002 Chevrolet Tahoe

1 Answer

Why did my 2003 Hyundai Santa Fe sudden lost power while driving?


what happened when you tried jumping the car? sounds like it could be a bad ignition switch since only non-switched things work.

May 22, 2014 | Hyundai Santa Fe Cars & Trucks

1 Answer

What can cause door locks to unlock and then lock again while driving


Intermittent connection problem inside the neutral safety switch.

Apr 30, 2014 | 2006 GMC Envoy Denali

1 Answer

96 Chevy Tahoe won't shift into park unless its done manually. What do I need to do?


If you have a security system , Use your remote to lock and unlock the doors .This should work on flashing lights. ( change remote batteries if weak. For shifter, unlock cable and reset

Mar 11, 2014 | Chevrolet Cars & Trucks

1 Answer

Car has been jumping while im going down the road like it is a bumpy road but its not for about 3 weeks. Belt broke on the car about a week ago replaced it. Driving on a gravel road yesterday the car kept...


Coolant on the spark plugs is a classic indication of a failed cylinder head gasket. No point in doing any further analysis 'till you get that squared away. When you replace the head gaskets, it's always advisable to have the heads checked for cracks and warpage.

May 29, 2011 | 1997 Lincoln Town Car

1 Answer

1991 Chevy Lumina. Car has been sitting for 2 weeks, now battery is dead. Using physical key, will not unlock doors. It seems some power is required to unlock door, even with key. How can I unlock the...


The key should work even if there is no battery in vehicle. Have you tried both doors (or all doors with locks) Do you live where the temp is below freezing - could be frozen shut or locks frozen?

Dec 01, 2010 | Chevrolet Chevy Cars & Trucks

1 Answer

While driving all the dash lights (airbag,seatbelt,every warning light flashed) and the speed odometer and tach jumps back and forth for a second and everything went back to normal. The truck never missed...


I am not positive about my answer but I figured I would give my feedback anyways. It is possible that your alternator might be going out. In my experience, I had a '95 Maxima where, as I was driving, the battery and brake light would come on for a second and then it would turn off. A couple of days later, I needed a jump start. After driving down the road and after the car shuts off on me again (even after the jump), I realized that I needed a new alternator. Sure enough, the alternator solved the problem.

Nov 11, 2010 | Chevrolet C1500 Cars & Trucks

2 Answers

Wild door locks on '96 Grand Caravan


sounds like a door lock switch is stuck on it causing it to lock and unlock there should be a fuse in the under dash fuse box for them.

Aug 28, 2009 | 1996 Dodge Caravan

1 Answer

Doors lock and unlocking in gear


Sounds like a short in the lock switch or in one of the doors. Eliminate each one step by step by unplugging each unit one at a time and see if the problem goes away. Start with the lock button that you push to lock and unlock the doors from the inside. This switch tends to get a lot of soda and coffee spilled on it and it shorts out.

Jun 02, 2009 | 1995 Dodge Caravan

Not finding what you are looking for?
2007 Hummer H3 Logo

72 people viewed this question

Ask a Question

Usually answered in minutes!

Top Hummer Experts

yadayada
yadayada

Level 3 Expert

75744 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22114 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8123 Answers

Are you a Hummer Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...