1997 s10 blazer 4x4 problem
#1
1997 s10 blazer 4x4 problem
I got a 1997 blazer 4x4 4.3l from a friend to fix up got it all in great shape but the 4wd just wont work. no lights on the 3 button switch. 20amp fuse is good, tccm I just replaced as well as the 3 button switch. I have been front to back on this thing and cant figure it out. I have been trying to find a tccm wiring diagram but no luck for my 97, I have power to the axle switch on the pink wire, I have power to the 3 button switch, and power to the orange wires on the tccm, ground wires I can not figure out. please help..
Last edited by Viper212; 02-01-2019 at 06:07 PM.
#6
#7
no bcm on my model. just ecu located on pass. side under hood and tccm located by the flasher relays under dash below the heater a/c controls.
so far I have looked at all diagrams online and none of them match my 97.
so far I have looked at all diagrams online and none of them match my 97.
#8
I looked at your link. I have tried the pin 13 ground test. when I do that it still does nothing no lights at all on switch. when I put a light tester on a ground then touch the wires on the back of the 3 button switch depending on which wire some light up others if I push 2hi 4lo or 4hi they light up test light.
#9
I looked at your link. I have tried the pin 13 ground test. when I do that it still does nothing no lights at all on switch. when I put a light tester on a ground then touch the wires on the back of the 3 button switch depending on which wire some light up others if I push 2hi 4lo or 4hi they light up test light.