Wont go into 4x4

[givetoget]

Was driving off the lake yesterday in 4x4 and it just came out of 4x4 and wont go back in. I do have 2 wheel, but no 4 high or low. It sounds like its trying to go in but wont go all the way in. Its push button, when you push for 4 high or low the light just keeps flashing. I have tried in neutral, in gear, moveing slow,but no go.

Its a 96 Silverado 1\2 ton 350

Any and all help would be greatly appreciated. Thanks

[pureinsanity]

Did you try going into reverse?

sounds like it might be a switch or relay

[Chris Haley]

Bad switches. I just had a rebuilt front differential put in my 05 Z71. When I got it back it did the exact same thing! Took it back and they ended up taking the switches or whatever out of my old front differential. Have not had a problem since. It only took an hour so not sure if it's a big deal or not.

[LightningBG]

Could also be the motor that engages the transfer (not sure that is the correct terminology). That's what happened to my mom's blazer. The switches were tested and were fine.

[Chris Haley]

Oh and beofore someone asks why my mechanic didn't catch that. It worked fine when they test drove it. It wasn't until I had it home in my un-heated garage over night that it would not work.

[Macgyver55]

Not sure when they changed styles, but the front differential actuators were sometimes the problem in the early 90s. They did an update around that time for the pickups Subs and Tahoes. Its an easy fix IF thats the problem, and usually run between 75 and 125 depending on where you buy.

[givetoget]

OK Thanks for all tips and info.Maybe tonight I will pull out the actuator thing and see if I can test that in some way to see if it is good or not. When I find the solution I will post back to pass it on. Thanks again.

[MJ1657]

Take the actuator out of the front diff. Plug it back in and put the vehicle in 4x4. You will be able to see the actuator move out if its working. 96 was a transition year you could have the old wax style or the electric actuator.

[givetoget]

Thanks all, I got it fixed last night. It was the actuator. Yes it was an easy fix and cost was $84.00 Thanks again