Hi. Sounds like your shift motor is sticking. The transfer case shift motor is mounted on the back of the transfer case. It is an electric motor and sometimes sticks. You can try lightly tapping on it with a hammer while someone tries shifting into 4x4 high. If it goes into 4x4 then you need a new shift motor. It is very common and not a difficult repair.
Check that and then you can get back to me on here. It could be many things. That is your best bet though. If that doesn't work let me know and we can go from there. Also if you "accept" we can still continue talking on here. Just let me know. Thanks.
OK. I tried banging on the shift motor while the vehicle was in park and someone else switched into four wheel drive, with no results. Tried this twice. Just so I hit the right motor, the shift case is rear of the transmission, correct? I will accept your answer now but would like to keep on talking. What would be the next thing to check?
This is the first time I've used this web site. Do I have to stay on, or can I log off and check back in later?
Yes the transfer case is on the back of the transmission. You can log off and come back. When you send me a reply I will see it. If I'm not online I will get back to you as soon as I see it. Do the 4x4 lights light up when you start the truck? They should come on for a few seconds then go out when truck starts.
No, they don't come on when I start the truck
Ok, since the lights didn't come on at all you may have an issue with your 4x4 module. It's located in the passenger side kick panel (where your passengers feet would be). Pull off that panel and disconnect the connectors to the module. Wait a couple minutes and then plug back in. Recheck your 4x4 operation. That might reset it. Let me know.
Yes. Ok now I need you to check for power/voltage at these pins on the 4x4 module connectors. It's pins 1,2,9 on one connector and pin 16 on the other. The color of the wires are in the diagram. For example pinXXXXXYE which is red with a yellow stripe. Check for power at these pins.
Ok. Yeah it is getting involved. You were not one of the lucky ones who could just tap on the shift motor as most often are the case. Honestly I recommend the dealer. They are the best at what they do. Yes more expensive but independent shops tend to guess and that ends up costing you more in the long run. If you don't want to go to the dealer then just a general repair garage will do. No a trans specialist, not their area of expertise. Sorry we couldn't pinpoint this easier.