need help on a service 4wd light that keeps coming on
on my 00 serria with only 50k
it came on for a while when i was driving went off for a few days and came on again.
is this a maintenence thing or ?
also driving around in a fast circle and check engine light came on but went away after a block or so?
any advice would help
thanks
marc

 

Uhh I've had that once or twice but it went away. I'm pretty sureyou can get that turned off with one of those diagnostic devices at your local auto parts store. I wouldent worry about it as a physical problem unless you hear or feel something. Good luck Marc!

 

it does need to be checked for codes...many times its the switch acting goofy

 

thanks for the advice. had heard that the hubs could be going bad to get a warning like that. but i don't hear any strange sounds so hopfully its nothing.

marc

 

i've got an 03 z-71 mine ever once in a while will freak out and kick into auto 4wd or kick the transfer case into neutral and the switch. a friend of mine a long time gm tech told me abouton some of these trucksthe actual wiring harness for the 4wd (located on the driver inner fenderwell behind the power distribution block) its a 3 wire harness is to short. i admit i didn't belive him at first (i wish i would have) and bought the swich on the dash..........soooo yep that was an expensive mistake [&:]so i go to check the harness andsure enough it had to much tension onit (to short)so i just extended mine, heat shrinked it put new conduit cover onit and let her go. that been over a year now and not the first problem since.......knock on wood

 

i recently replaced the in dash button on my 2005 z71& my 4wd still does not work. the lights on the switch all come on at startup, but only theneutral button remain on once i'm rolling.i cannot get itout of neutral. what other ways can i fix this?