I own a 78 Chevy Suburban 4 x 4, how do I tell which TC I have? The shift pattern is: High, High Lock, Neutral, Low and Low Lock. There are no looking mechanisms on the front hubs. I recently began experiencing the 4x4 shifter jumping out of gear while 4x4 on sand. Any suggestions??
The NP 203 is basically a differential in itself. High and Low are just Hi or Lo Differential modes. High Loc and Lo Loc the transfer case is locked solid like a regualer transfer case. I dont know what to tell you about it jumping out of gear.