4x4

[dos equis]

97 tahoe my 4wd stopped working checked the fuses,ok checked for power to fuses,ok try to get codes with code reader and by grounding 13 terminal no codes either way.not sure what to do next really dont want to throw parts at ituntill it works, any ideas?

 

[Donnie Yukonie]

Im having a brainfart I want to say autotrac was added in 98 IIRC . You still have a E-4x4 so are you getting power to and from the switch? and can you hear the encoder motor kick over ?

 

[dos equis]

the switch lites come on but i do not hear the motor when i push the switch

 

[dos equis]

anybody? i could use a little help

 

[Jerky Arm Ape]

The switch lights come on and stay Constant without blinking?

Your experiencing absolutely no function?

Not even low gear engagement?

 

[dos equis]

the switch lites stay on intermitently now ,do not blink ,the 4wd functions correct when the lites work.i am thinking the controler is bad but with no codes not certain.

 

[bigal11419]

My 99 did something similar. Some days the lights on the switch worked and others it didn't when they lights worked it would shift into 4wd normally when the lights were not working it wouldn't shift. I changed the switch and it fixed it.

 

[dos equis]

ok thanks sounds like my problem and is the cheapest part in the system i will get one and hope it is a cure,thanks again

 

[Monkeyman]

I don't know if my S10 based SUVs ('96 Jimmy and current '04 Blazer) are set up the same but the wiring going to the electronic 4 wheel drive brain box seems to have issues. I've had to wiggle the wiring and unplug/plug the harness into the box to get them working right. I started out by replacing the dash switch which didn't help but, as cheap as they are, couldn't hurt. On both my SUVs, the brain box was hidden under the passenger kick panel trim.