4x4 Service Light

i have a 2000 GMC Jimmy 4x4 and the 4x4 service light came on after reading a few post i decided the first step would be to replace the switch

after replacing it now it went to 4 high and wont go out everytime i try and switch it to 2 wheel drive it makes a clicking noise under the passenger side of my dash but wont switch into 2

i put the old switch back in and it does the same so now i went from 2 wheel before i replaced the switch to 4 wheel and and cant get it out

maybe the module ?

any help would be nice

Are all 4 tires the same brand and size and is tire pressure equal in all 4 tires?

Does the actuator under the battery tray have vacuum to it when you switch to 4WD?

Does the actuator under the battery tray pull the cable at least 1/2" when you switch to 4WD?

yes the tires are all new and air pressure is the same at 32

ill take a look at the actuator in the morning


Thanks

I am having the same problem and I found a broken wire on my module I cut the old plug off and figured I would splice the a new one to the wires but now I just realized some of the wires are the same colour so I don't know how I am going to splice it now. Any advice?

sorry it took so long to get back to all this was out of town

the fix for mine was encoder motor decided to just take it into a garage my family deals with and was a pretty easy fix


Thanks

Was it very expensive to have fixed? How many hours of labor did he charge