Hey sorry to cut into your thread here but I wanted to get in here and tell you to wait on going to the dealer or wherever! I Just got done having this problem on my 2000 Chevy Silverado LT 1500 I have the Push button 4WD and for the past 2 years i've dealt with the "Service 4WD" message" I don't know how comfortable you are with Saudering but you have to remove that push button 4WD box from your dash (really isn't hard a couple clips and it's out 10 min. TOPS) and than take the box apart (just some more clips maybe 2 screws and than on the board itself look for where the buttons actually connect on the board and look for "CRACKED SOLDER JOINTS" just use your sauder gun to resauder the joints and you'll be good to go I did this 3 weeks ago and haven't had a problem or Message since and this is after 2 years of constantly dealing with it! A lot of people have had this issue and fixed it doing this method try it if it doesn't work you go get the replacement part pop it in and call it good but if it works it just saved you 60+ dollars. I hope this helps and you read it before you take it in!!!

 

Hey G33K, I do have the pushbutton, and popped it out 1st thing this morning. All the solder points were intact. Hoping Mr Shamrock is right and it's the switch on the transfer case!

 

Again I don't know how much you know about saudering but mine looked fine too I just looked up a picture of a cracked sauder joint on the net and than just ended up melting them all to make sure everything was good. It's worth a try it takes 5 min and it's free can't go wrong there! Just thought i'd mention it I don't wanna see you drop money on something that doesn't fix the problem.

 

went to the dealer, turns out both the pushbutton switch and the transfer case module needed to be replaced:

new switch: $95.88
new module: $341.21
labor: $144.26

total: $622.05

 

Wow man I would have had to have gotten a 2nd opinion. For both to be bad...I think they are just throwing parts at it. They probably put a switch in it and that didn't fix it so they did the transfer case switch. Typical stealerships - throw parts at something at someone else's expense so you don't have to actually use your brain to try and diagnose it. Wow!

 

yeah, kinda second guessing myself rushing to get it done.

 

That sucks Man Sorry to hear that!