When trying to engage into either high lock or low lock, a message appears "service 4wd" and the H2 Hummer just stays in the regular all wheel drive mode. This started happening last winter and is consistant in cold weather when in MT. When I am in Houston this rarely happens, it usually will engage in either high or low lock. Someone told me the electrical actuator needs to be replaced with a pneumatic actuator. Thoughts?
have the same problem?
Thursday, December 18th, 2008 AT 7:12 PM