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H2

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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
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
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....
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
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
This engine requires 6 quarts of oil according to the service manual. I would check to see if the engine has an aftermarket engine oil cooler installed. You would see two hoses with an adapter above the oil filter and...
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
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
Mi compressor de aire no enciende
Hola. El precio que usted busca cambiaria dependiendo si el compressor que ocupa servicio is el de la suspension, o de el system de aire condicionado. El compressor de la suspension es el que infla los a los amortiguadores, mientras...
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...
Question
What about a 2003 H2 Hummer?
In most cases, this wire will be fore the wheel speed sensors if the vehicle has an anti-lock braking system or traction control system. The best thing to do would be to hire an experienced technician like one from YourMechanic...
Question
I'm trying to wrap info up for a twin turbo on my hummer H2 Sut and the cost I need help with the price.its a 2005 Sut
Hi there. This would be considered an aftermarket upgrade, which unfortunately is not a service our mobile mechanics can offer at this time. We continually add new service offerings frequently, but at this time we would be unable to offer...
Question
2005 hummer temp gauge drops off and than sputters and sometimes dies. temp up and drives fine
It has to first be determined if the actual engine temperature is really fluctuating or instead the stalling is just simply a coincidence with a gauge malfunction. A scan tool can measure engine operating temperature. Fuel supply faults are a...
Question
Hello there, I was wondering if I would need to add a manual transmission if I add a twin turbo to my automatic car.
I recommend keeping your transmission in your vehicle that it is designed for. If you plan on putting in a Twin Turbo setup, then the transmission will hold up to the changes. Automatic transmissions are designed to take more abuse...
Question
Hi I have hummer h2 06 there is sign come on screen low oil pressure I changed sensor also changed fuil pump Engine runs smooth ha
Oil pressure can be tested and verified against factory specifications using an external pressure gauge, connected to a threaded access port on the engine block. If pressure measures normal, and the engine otherwise functions normally (adequate and even cylinder compression,...

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