99 Jimmy TCCM

GrantG82

New member
Joined
Jan 13, 2011
Messages
8
Reaction score
0
Points
0
Location
Peterborough, Ontario
Ok i just bought this truck (99 Jimmy 4 button 4x4) and the 4x4 didn't work the lights on the buttons didn't even light up and service 4x4 was on so i replaced the tccm and tried it and the button lights came on the service 4x4 went out and seemed to be working, not sure though but that only lasted about 2 or 3 mins then the button lights went back out and the service 4x4 came back on. But when you turn the truck on now the tccm clicks about 4 times is that normal? and every once and a while the button lights come on as normal and the service light goes out then shortl after it goes all screwy again. what should i look at next?
 
Ok i just bought this truck (99 Jimmy 4 button 4x4) and the 4x4 didn't work the lights on the buttons didn't even light up and service 4x4 was on so i replaced the tccm and tried it and the button lights came on the service 4x4 went out and seemed to be working, not sure though but that only lasted about 2 or 3 mins then the button lights went back out and the service 4x4 came back on. But when you turn the truck on now the tccm clicks about 4 times is that normal? and every once and a while the button lights come on as normal and the service light goes out then shortl after it goes all screwy again. what should i look at next?

Check the wire harness where it clips on to the TCCM. Common for corrosion to form there which causes the issues you have mentioned.

Keep us posted and did you retrieve the DTC codes for your 4WD system???
 
I checked the harness when i replaced tccm and its all good. No i haven't been able to get the codes. Everyone says to ground pin 13 so i went to do that and there is nothing in pin 13. i can only count about 5 wires in the obd harness
 


Back
Top