The "service 4WD" light has come on in my 2003 Hummer. Does this mean something is wrong or just a ploy by GM?

The light came on shortly after 30,000 miles. I have a feeling that this is just to get people in to GM so they can be charged to have the warning shut off.The "service 4WD" light has come on in my 2003 Hummer. Does this mean something is wrong or just a ploy by GM?well, that and service the unit, ie change the oil in the differential housing. Most people don't change that oil, and it's important to do that. If you gots the cash to buy a Hummer, you gots the cash to pay for upkeep and maintenance. Or should.The "service 4WD" light has come on in my 2003 Hummer. Does this mean something is wrong or just a ploy by GM?Computer problem. Get it checked or face the risk of voiding the warranty.The "service 4WD" light has come on in my 2003 Hummer. Does this mean something is wrong or just a ploy by GM?It's a warning. Heed warnings or pay big-time later.



The Hummer is not a Chevy. Take it into a Hummer qualified mechanic. I would start at the dealerThe "service 4WD" light has come on in my 2003 Hummer. Does this mean something is wrong or just a ploy by GM?
why don't you at least tell us whether it is an H1, H2, or H3. might make a diferrence don't you know. take it to the dealer and ask them the same question. what is to be serviced - and why. if you have never used the vehicle off road - (as most owners do not) then most likely there is no reason to service the 4wd. tell them to please turn off the light at - no charge. see how that works.

fondue