Hummer H3 Questions Maintenance & Repair

Failing Transmission Pump Tips?

Hi, I have an older car (2007 hummer h3 5 cylinder base) and since I bought it it was acting weird between 60 and 80 k/h, always bouncing between 3rd and 4th gear, I didn’t know what is going on ...

H3 2007

How fast can you go in 4 wheel drive fast locked

Starting Issues

Will not turn over even after replacing fuel pump not a security system issue

My H3 Keeps Heating Up.

I Have a 2006 Hummer H3 and I recently replace the radiator, fan and thermostat and when I drive it, and come to a stop it heats up and when moving the temperature goes down. And the water reservoir...

H3 Oil Light

Has anyone found the solution for the H3 oil light coming on in warmer weather?

Front Driver Side Lower Control Arm

I am trying to replace the front drivers side lower control arm ball joint assembly. I have a nut that the torsion bar and control arm assembly are joined together. The nut is stripped how do I ...

Heater Is Blowing Cool Air

All the sudden the heater starts blowing cool air. The blower motor, fan, and blower motor resistor are working well. The car is not over heating as the engine temperature gauge is indicating normal...

Hi,I Am Getting Siren Sound In My Hummer H3 From Engine,I Don’t Know Why?

I am getting siren sound from engine in my hummer h3 ,I don’t where it is coming from and why? And it is coming continuously and doesn’t stop when I stop my car also

Smog Test

Test technician told me that computer not ready

Hummer H3 Oil Light On When Breaking

My oil light comes on when I break. 2007 Hummer H3, 100K miles. Goes off on acceleration. Switch? Sending unit? Thicker oil?

Transmissions

Transmission flies into neutral. While driving , replaced transfer case still have same problem any ideas what causes this 2006 hummer h3

The A/Vheater Blowers Quit. What Is The Fix

Blower was working fine,then quit. Checked the fuse to no avail

Anyone Ever Have Your Hummer H3 Make A Bad Metal Grinding / Flopping Sound,...

Upon take off, the front drivers side makes a grinding, popping, scraping sound then locks up front left Tire. Try to take off and it won't move. Able to go in reverse for a bit, then back in driv...

The Check Engine Light Code Reader Won't Activate When I Plug In A Code Rea...

My check engine light came on so I plugged in my code reader into the code reader port and it would not power up. So to make sure that I did not have a faulty code reader I used a different code reade...

Engine Air Filter

Where is the engine air filter

Passenger Break Light Stays On

Must remove bulb when not driving

H3 Hummer 2007 Brake Problem

while driving my h3 hummer I cant over 30 miles per hour the car also will stop when i take my foot off pedal and the abs traction comes on. I had just had right axle and caliber replaced along with...

H3 Forcing To Steer And Reverse

HUMMER H3 2010 Check Engine Light Burned Out

I had the check engine light on (usually from the gas cap), then it went off by itself. Mechanic cleared codes but stated the CHECK ENGINE bulb burned out. The HE won't pass inspection NYS because t...

Service 4 Wheel Light Comes On And Have No 4 Wheel Drive At All