2002 lb7 4wd conversion

01 Sierra 4.8

New member
Dec 13, 2015
28
1
3
Hey guys, I have a 2002 lb7 2wd swapped the driveline over from a 2001 duramax parts truck only issue is it didn’t come with a cab so couldn’t get the 4wd buttons or the dash harness. I pulled the 4wd portion of the dash harness from a 2002 a couple weekends ago, pulled it out pin by pin labeled everything and took pictures. Started putting the harness in got it all light up, everything is where it needs to be but still not going into 4wd and the little amber lights on the 4wd switch aren’t lightning up, just wondering if anyone could help me out thankyou
 

DAVe3283

Heavy & Slow
Sep 3, 2009
3,681
236
63
Boise, ID, USA
These might help. It sounds like either the switch or TCSCM aren't getting power properly.
 

Attachments

  • Figure 1 Transfer Case Shift Control Module and Encoder Motor.jpg
    Figure 1 Transfer Case Shift Control Module and Encoder Motor.jpg
    219.9 KB · Views: 13
  • Figure 2 Front Axle Actuator.jpg
    Figure 2 Front Axle Actuator.jpg
    109.6 KB · Views: 10
  • Figure 3 Shift Control Switch Inputs and Class 2.jpg
    Figure 3 Shift Control Switch Inputs and Class 2.jpg
    185.5 KB · Views: 10