Hi, I just bougt the '02 Trailblazer. Now I noticed that the 4wd is not working, although there is no warning lights on dash. I have read all the 4wd issue topics here, but don't seem to find solutions for my problem.
When I start the car up, ALL the lights on the transfer case swich light up for few seconds.
I turn the swich to AWD- no lights- no sound and lights up the 2Hi indicator on swich
4Hi - light blinks and light stays on, I can hear the transfer case motor and actuator working, but still only rear wheel drive ( I noticed it because got stuck in the sand the other day).
4Lo - same as 4Hi.
Now I tested the system that way: on the 2Hi I can turn the front driveshaft by hand, when on 4Hi or 4 Lo mode front shaft would not turn. I assume, that the transfer case is ok then?
The TCCM block on my car is 15085386, but as I understand, when the lights on the swich work it's not the module problem? (Except the AWD)
Yesterday I took the dashboard swich apart to clean it, I was nice and clean inside. I have turned the knob few dozen times, but no AWD light! I have pulled the #8 and #45 fuses - no luck.
I appriciate if anybody can get me some directions to diagnose the problems. In Estonia (It's where i live) there's few TB-s in salvage yard, but all of them are 02 models. So by getting the parts I have to order form e-bay or Rockauto.com
When I start the car up, ALL the lights on the transfer case swich light up for few seconds.
I turn the swich to AWD- no lights- no sound and lights up the 2Hi indicator on swich
4Hi - light blinks and light stays on, I can hear the transfer case motor and actuator working, but still only rear wheel drive ( I noticed it because got stuck in the sand the other day).
4Lo - same as 4Hi.
Now I tested the system that way: on the 2Hi I can turn the front driveshaft by hand, when on 4Hi or 4 Lo mode front shaft would not turn. I assume, that the transfer case is ok then?
The TCCM block on my car is 15085386, but as I understand, when the lights on the swich work it's not the module problem? (Except the AWD)
Yesterday I took the dashboard swich apart to clean it, I was nice and clean inside. I have turned the knob few dozen times, but no AWD light! I have pulled the #8 and #45 fuses - no luck.
I appriciate if anybody can get me some directions to diagnose the problems. In Estonia (It's where i live) there's few TB-s in salvage yard, but all of them are 02 models. So by getting the parts I have to order form e-bay or Rockauto.com