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Understanding the Hummer Oil Life Monitor Service Indicator Lights
Car symbols, or dashboard lights, are a car service reminder. The Hummer Oil Life Monitor (OLM) system indicates when and what service your car needs.
Hummer Certified Pre-Owned (CPO) Car Program
If you are in the market for a used Hummer vehicle, you may want to check out cars under their certified pre-owned program. Many manufacturers have a certified pre-owned (CPO) program, and each...
How to Get Hummer Dealership Certified
Hummer car dealerships offer automotive technician jobs to mechanics who are Hummer certified through the Universal Technical Institute.

Related questions

No oil on dipstick and slightly lower oil pressure
Hello. If you are checking the oil at the dipstick and it is being added to the correct area then you more than likely have a serious internal sludge issue. If there is a lot of sludge then the oil...
Clicking noise from steering wheel
Hello, thanks for writing in. Most of the time this clicking noise is from the column covers rubbing on the steering wheel. I usually remove the covers and drive the vehicle to see if it goes away. If it does...
passenger tail light out
Hi there. If there is no power to only that wire, then most of the time the short is in the wiring to the trailer wiring or in the rear junction block. Both of these are common areas to have...
car not starting battery
Hi there. It sounds like you need a new ignition switch. This is the most common failure on your vehicle that will cause this. It can also be a failure in the body control module, but that is not nearly...
Car bogs down when I cut the wheels too sharp
Your vehicle has a variable power steering assist. If you turn the steering wheel, a sensor will detect that the wheel is being turned and if you go all the way to lock the wheel the assist is lowered. This...
Intermittent issue where car is stuck in first after coming to full stop, and speedometer stays at zero
You have two symptoms that are pointing to the same problem. Both your speedometer, and your transmission, use the VSS (vehicle speed sensor). The transmission uses the data to calculate shift points. If there is not any output, the computer...
EVAP Small Leak Code P0442 Lit MIL. Code cleared, has not reappeared. But, Diagnostic tool still shows Emission Related DTC's
In order for all the monitors to clear you will have to do a lot of driving to see if it clears. The last two to clear take highway driving at a steady speed to clear and may take a...
Intermittent issue where after a stop car is stuck in first, speedometer at zero. Had output speed sensor changed, no change.
Hello there, a few possible faults could cause the vehicle to become stuck in first. The most common would be low fluid level, shift solenoid, transmission range sensor, or a transmission mechanical fault. I'd suggest getting this looked at by...
Feels like a broken shifter cable
This is definitely related to a shift linkage which is likely broken or loose. Sometimes the shift linkage bushings wear out and will cause this problem. There is a repair kit out on the market for this that is relatively...
3.7 engine temperature gauge runs between middle to 3/4, leans a little more to 3 /4 never over is this normal
Hi there, thanks for writing in about your 2007 Hummer H3. The temperature should typically rest more towards the middle of the gauge. You should have the vehicle tested to see if the engine is running hot, or if it...
won't start hot cable
Hot electrical cables or connections indicate either excessive current flow, or excessive resistance in a connection. Test the battery first. All battery cable connections should be clean and tight. You should not be able to move cables by hand. ...
overheating problem
Thanks for writing in about your Hummer H2. Let's cover the basics of diagnosing a overheating issue. First, verify the actual temperature at the thermostat housing. Cooling system (and cap) has probably been pressure tested by now. If it tends...
#3 Misfire engine light
Yes, it can be an electrical issue. A misfire at a particular cylinder can be caused by ignition, fuel injection, mechanical issue, or vacuum leak. I'm curious why none of the dealership techs repaired it. Faulty sparks plugs, coils, or...
wiper blades working reverse
I suggest first inspecting the wiper crank arm assembly between the wiper linkage and the motor. It may have slipped out of position. If that is secure, then yes, it sounds like you need the wiper motor and module assembly....
shuts off after driving
If I was diagnosing your Hummer, I would want to know if there were any diagnostic trouble codes (DTCs) stored in any of the computer modules. I would see if the Check Engine light was on and use my scan...
I have an 2006 H-3 3.5 /oil pan gasket leaking what is in volved to change out
There are many steps to replace the oil pan seal. The labor book time calls for 4.0 hours work. Your vehicle may be different if you have 4x4. The steering gear needs to be removed and sub frame along with...
I changed spark plugs and wires & cleaned throttle body, car idles rough and gas mileage is changed does not backfire or anything
A few different components could be causing your issue. Your symptoms sound at first like a spark issue. If a plug was tightened down too hard, the gap can become smaller than intended. This would decrease the power of the...
Car turns over but won't start
Hi, thanks for writing in. If, during a "no start" session, waiting slightly more than 10 minutes allows you to successfully start your H3, the problem is not with the fuel system. A failure of the ignition switch (an internal...
Car suddenly went into limp mode
Hello and thank you for contacting Your Mechanic. Your Hummer could have the brake system engaged for the traction control. Disable the traction control and see if the engine will increase in speed. Another thing to check is the...
Sludge in engine, constantly low on oil
If you are losing that much oil, and there are no external leaks (leaks that are visible outside), your vehicle may be consuming the oil. Unfortunately this can be harder to diagnose than an external leak. The valve guides and...

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