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Hummer

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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

Question
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...
Question
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...
Question
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...
Question
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. ...
Question
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...
Question
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...
Question
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...
Question
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...
Question
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...
Question
Don't know if the transmission went out.
A large transmission leak like one from a cooler pipe or a leaking transmission pan can cause the transmission to slip if the level gets low enough. Trying to drive the vehicle while the transmission is slipping does not help,...
Question
Engine sludge?
If you have excessive sludge in the engine, then the oil that you pour into the engine may not be able to drain down into the oil pan. You should change the oil and filter using 6 quarts of 0w30...
Question
What would cause an engine oil pan gasket to go out at 120,000 miles on a 2008 H2 Hummer?
Hi. The best way to explain why an oil pan gasket would start leaking is due to heat from running the engine which causes expansion and the engine cooling when not running which equals shrinkage. Over time, things just wear...
Question
Bus not starting
Hey there. This may be caused by a few different things which all seem to indicate you have a fuel supply problem. This may be caused by low fuel pressure, dirty or faulty fuel injectors, low voltage to the fuel...
Question
No oil on the dipstick
My first recommendation is to NOT START this engine until there is sufficient oil showing on the dipstick. Even if there was excessive sludge in the area of the valve covers, after an hour or two, most of the oil...
Question
Where do i fill up the radiator on a H2 Hummer 2006
Coolant on your vehicle should be added to the reservoir that is located on the passenger side of the engine compartment. It will have a cap on top, that can be removed when the engine is cool, and allow for...
Question
Changed oil pump, still no pressure
Hello. At this point, it would be wise to hook up a mechanical gauge at the oil switch port and see if you are truly experiencing a low oil pressure issue or if there is something else going on. ...
Question
My car is overheating when the air conditioning is on - 2007 Hummer H3
Hello. Running the A/C will put extra strain on the engine and cause it to heat up quicker. If your vehicle is overheating, you should keep it below 280 degrees at all cost. This is the temperature when extreme irreversible...
Question
My Hummer shows code P0300 after getting gas
You may have got contaminated fuel from the gas station. The code P0300 indicates you are getting a random engine misfire. This random misfire does not point to any one cylinder misfire and indicates that the fuel may be contaminated...
Question
I just want to know the location for fuel rail pressure sensor for hummer h2 model 2008
Hi and thanks for contacting YourMechanic. Look on the fuel rail to your engine and you will see two lines that will meet to the rail on one side. Right just before the two lines, you will see a sensor...
Question
My high beam light does not work on left side. I don't think it is the bulb.
Hi there. There could be an issue with the high beam switch. Check to make sure that the wires are connected correctly to the high beam switch. Also, check the bulb in the high beam on the left side. See...

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