Door lock problems

[Harbison]

Bought a 1998 2 Door Tahoe. Doors lock automatically when put in gear and unlock when turned off but neither door button works. Any ideas where to start? Doesn't have a key fob. Thanks for your help

 

[MO Viet Vet]

Remove those switches and inspect. Likely some dirty or burned contacts. Pretty common.

 

[gary350]

On my vehicle the door locks are attached to those automatic devices that automatically lock and unlock the doors. I pushed the button too hard once and broke it. It cost me $100 to repair it. Now I know not to push with the buttons let the automatic thing do the job. If you want to lock or unlock flip the switch on the driver side door dont touch the door buttons.

 

[lesterl]

Pull each switch take a wire and short from orange to either white or blue, should lock/ unlock, if so, replace switches. You wont damage anything doing this test as the switch does this internally, or you could use a meter to ohm it out like that....

 

[Harbison]

Here's what I've learned: the fuse keeps blowing. I even put in a 30 and it still blows. Has something to do with aftermarket stereo

 

[lesterl]

Nice, thought you said you had function from the automatic locks but not the switches? With the fuse blown does the autolock still function? When does the fuse blow (immedieately upon insertion, or after a function?) Does unhooking the stereo make a difference? What caused you to think it has something to do with it?

Orange wire at lock should have 12v on it other two just control a relay pack under pass dash infront of blower motor....