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If the 4WD service light comes on when you start your Hummer H2, it could indicate a problem with the four-wheel drive system. This warning light could indicate a problem with the transfer case, the drive shaft, the front or rear differential, or other components of the 4WD system.
It is recommended to take your vehicle to a certified mechanic or a Hummer dealership for proper diagnosis and repair. The service light coming on could be a sign of a serious problem, and it is important to address it promptly to avoid further damage to your vehicle and ensure safe operation.
look on the dash for a 4wd button or switch. may be located between the steering wheel and the radio. when you turn the knob to select 4hi, 4lo, 2hi, or auto, the indicator light above the corresponding selection will flash until the shift has completed. if the light stays flashing there is a fault in the 4wd system
Hummer 4wd service light reset Questions & Answers - Fixya
www.fixya.com > Forum > Tags > 4wd service light reset Hummer h2 2003 55000 mill ... service 4wd the liht is on all time Remote the battery wire from the car for 20 ... My 2006 H3 will not come out of 4 wheel drive?
You shouldn't have to use 4wd to tow a boat out of the water. Does your truck have a 2wd button or just the 4high and 4low button? If you have a 2wd button, put tranny in neutral and then hit the 2wd button. If you just have the 4high and 4low button, put the tranny into neutral then press the 4high button twice (Once to get back into 4high, then again to get out of 4high and back to 2wd).
The Hummer H2 and H3 are both all time 4WD. There is no way to put it in 2WD. Now, you can select 4WD High or 4WD Low. You can also, if your vehicle is equipped with it, lock the front or rear wheels through the differential selector. This is one of the primary reasons Hummers get terrible gas mileage is because they are always in 4WD. The only other solution is to swap the transmission to an Allison 6Spd, which is often done with diesel conversions, and they usually give you a 2WD option, and can get up to 25 MPG out of an H2.......but that conversion is about $30k.
Same thing happened with my H2 2003 model, no lights above the 4wd buttons and i can't switch between high and low 4wd. did u know what is the problem ?
unhook the battery for about 5 mins. this will reset the powertrain control module (PCM) that would be a good start, is this a king ranch? or just a basic f-150?
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