vacuum lines

[Mackee481]

I found out that you can manually shift the transfer case. I now have the car in 2hi, as it originally was. Now when I try to shift it into 4hi, the lights on both 4hi and 4lo, blink 4 times and go back to 2hi. Doesn't the switch lights act as some kind of DTC code? Also I replaced all the vacuum lines, but I can't find a good vac diagram of which line on the vac switch goes to where. any help on this? I have manifold vacuum but still no vacuum on my actuator .
thanks

 

[Geophro1122]

(Answered your other question that you just did...).

You may need a transfer case switch. Common problem. I put one in my 01 jimmy and also took the time to install new vacuum lines and vacuum actuator.

(Yeah, old post...whatever.)