20 Most Recent 2009 Hummer H3 Questions & Answers


technician will do it, u cannot

2009 Hummer H3 | Answered on Oct 07, 2018


3 years on, battery life is almost done with , just replace battery and u wont face this issue,

generally battery lasts 3-4 years, then weather also plays its part.

replace battery and thats it , u shall have peace of mind.

2009 Hummer H3 | Answered on Oct 07, 2018


Spray water on the roof (with a friend inside looking) and find the leak, that is the only way.

2009 Hummer H3 | Answered on Feb 07, 2018


There is a solenoid on your transfer case that is used to shift from 2WD to 4WD. It may have frozen or is just stuck. If you know what to look for, get underneath the vehicle, find the transfer case and locate the shift cylinder. There is an electrical connection on the shift cylinder. Ensure that it is plugged in.

2009 Hummer H3 | Answered on Oct 25, 2017


My 06 was leaking during rain also. It turned out to be the sunroof. There are two drain tubes in the front of the sunroof that run the water down the corners to the ground and two drain tubes that drain water out the back corners. The water would seep around the glass, which is expected, but both of the tubes on the front of mine were plugged, and the water would overflow behind the dash and fill my floorboards. If my H3 was leaning to the left during a storm then the drivers side would be full of water. If leaning right, then the passenger side. I had to open sunroof and blow compressed air into the drain holes to clear them, but be careful, too much air will separate tubes from sunroof and then you will have to remove the inside paneling around sunroof to get to tubes and reconnect. You may only have one side plugged. you can test it by opening sunroof and pour a little water in the small catch pan in the front of the sunroof and see if it drains as expected (to the ground under the firewall on left AND right side). You can see the holes in each corner of catch pan to drain the water. Plug one with your finger, then the other to find the plugged side. Good luck!! Hope this helps!!

2009 Hummer H3 | Answered on Apr 06, 2017


Circuit/System Description
When the transmission is placed into REVERSE, a 12 volt signal is sent to the rearview camera image display module indicating that camera operation is requested. The rearview camera image display module then supplies ignition voltage and ground to the rear vision camera. The rear vision camera sends video information through the rearview camera image display module to the inside rearview mirror through a video signal + and a video signal - circuit. A grounded shielding also wraps the video signal circuits to reduce electronic interference which may degrade the video signal and cause a distorted or otherwise degraded image.

Rearview Camera Image Display Module (UVC)
In the instrument panel behind the driver side knee bolster to the right of the steering column
Do you know how to do electrical testing ?

Rear Vision Camera System Does Not Display
Ignition OFF, disconnect the harness connector at the rear view camera image display module.
Test for less than 1.0 ohm between the ground circuit terminal 3 and ground.
? If greater than the specified range, test the ground circuit for an open/high resistance.
Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 2 and ground.
? If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
Ignition ON, park brake applied, vehicle in REVERSE, verify that a test lamp illuminates between the control circuit terminal 1 and ground.
? If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.
Ignition OFF, connect the harness connector at the rear view camera image display module. Disconnect the harness connector at the rearview camera.
Ignition OFF, test for less than 1.0 ohm between the ground circuit terminal B and ground.
? If greater than the specified range, test the ground circuit for an open/high resistance. If the circuit tests normal, replace the rear view camera image display module.
Ignition ON, park brake applied, vehicle in REVERSE, test for 5.8-6.2 volts between the 6-volt reference circuit terminal A and ground.
? If less than the specified range, test the 6-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the rear view camera image display module.
? If greater than the specified range, test the 6-volt reference circuit for a short to voltage. If the circuit tests normal, replace the rear view camera image display module.
Ignition OFF, disconnect the harness connector at the rear view camera image display module.
Test for less then 1 ohm between the shield ground circuit terminal 10 at the rear vision camera display module harness connector and terminal D at the rear vision camera harness connector.
? If greater than the specified range, test the shield ground circuit for an open/high resistance.
Ignition ON, test for less than 1 volt between the signal circuit terminal 9 and ground.
? If greater than the specified range, test the signal circuit for a short to voltage.
Test for infinite resistance between the signal circuit terminal 9 and ground.
? If not the specified value, test the signal circuit for a short to ground.
Test for less then 1 ohm between the signal circuit terminal 9 at the rear vision camera display module harness connector and terminal C at the rear vision camera harness connector.
? If greater than the specified range, test the signal circuit for an open/high resistance.
Ignition OFF, disconnect the harness connector at the inside rearview mirror.
Ignition ON, test for less than 1 volt between the following signal circuits at the inside rearview mirror harness connector and ground:
• Video + signal circuit terminal 6
• Video - signal circuit terminal 7
Test for infinite resistance between the following signal circuits at the inside rearview mirror harness connector and ground:
? If greater than the specified range, test the signal circuit for a short to voltage.
• Video + signal circuit terminal 6
• Video - signal circuit terminal 7
? If greater than the specified value, test the signal circuit for a short to ground.
Test for less then 1 ohm between the following signal circuits:
• Signal circuit terminal 12 at the rearview camera image module and terminal 6 at the inside rearview mirror.
• Signal circuit terminal 11 at the rearview camera image module and terminal 7 at the inside rearview mirror.
? If greater than the specified range, test the signal circuit for an open/high resistance.
If all circuits test normal, test or replace the rear vision camera.
Ignition ON, park brake applied, vehicle in REVERSE, verify a clear rear vision image is displayed on the radio.
? If a clear rear vision image is not displayed, test or replace the inside rearview mirror

2009 Hummer H3 | Answered on Feb 21, 2016


Try a new bulb or flasher.

2009 Hummer H3 | Answered on Feb 10, 2016


GM with Hummer has a recall pending on that exact thing due to possibility of a fire. Contact your dealership to see when they finalize the recall, right now they are still working on a part for the fix before they begin having anyone bring their H3 in to be fixed.

2009 Hummer H3 | Answered on Jan 21, 2016


Could be the sensor usually on top of the dashboard. It may think it is always daytime.

2009 Hummer H3 | Answered on Nov 29, 2014


Sounds like your front drive shaft between the tansfer case and the front differential. Or it is a Haft shaft going out to the front wheels.

2009 Hummer H3 | Answered on Oct 04, 2014


follow this link as i think it is exactly as your describing
Thread H3 Manual Transmission Stuck Throttle

2009 Hummer H3 | Answered on Jun 03, 2014


check fuses and relays especially the control module..

2009 Hummer H3 | Answered on Dec 15, 2013


check the harmonic balancer for correct operation and condition

2009 Hummer H3 | Answered on Nov 20, 2013

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