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can you post a picture of the switch?, if it's the same as the 00 you can try holding down the 4wd or 2hi button and then start it up, then release the button and see if it switches, the lights may stay lit up but you will be able to tell by driving or listening it engaged or disengaged if it does then it's the switch for sure.OEM switch
ok well it was worth a shot, one of these guys I tagged will answer back at some point with some other ideas or more info.I also try the holding down of the switches but nothing
99 Tahoe 4x4
I replaced my selector switch and front actuator awhile back and everything was working for awhile.
Now today all of the lights are on and stay solid. I can't shift in or out of 4wd.
Any ideas what would cause this?