What's going on?

[zackcrum]

So I took a 600 mile trip last night/today with no problems whatsoever. After parking my truck for a few hours this evening and coming back to it the 4wd controls were all going crazy. None of the indicator lights above the radio were working, not even the normal 4high indicator. The gauge cluster on the other hand was going crazy. It kept blinking service stab, service 4wd, and traction failed. Along with the traction control light inside the rpm circle staying on.

The truck drove fine, no difference at all. After about a mile I pulled over and pressed 4high. It would blink and go back off. The same with the other two. This was with the engine running in neutral. Then I cut the truck off and turned the ignition back on while in neutral. Once all the normal start up things happened it was the same story. I then put the truck in park, turned the ignition off again and started the truck. Back to normal it went. Has anyone had this problem? Is it something to worry about or maybe just a computer glitch? I've never had problems with my selector buttons in the past.

 

[Ghostbuster]

Sounds weird. Have you tried to reset the computer and stuff by unplugging the battery for a few minutes?

 

[zackcrum]

Sounds weird. Have you tried to reset the computer and stuff by unplugging the battery for a few minutes?

I didn't have to. Maybe I need to clear up my wording. When I sat back to normal it went. I mean it all went away. I have driven the truck about 10 miles since I turned it off and it hasn't came back yet.

 

[zackcrum]

Ok. The truck sat during dinner. About half an hour. Got in started it up. Same story. Turn it off do the routine and it's like it never happened.
Here is the controls with nothing on

 

[Ghostbuster]

It doesn't take long to unplug the battery... Just do it already. Then see if the problem continues. If it does.. take it to some place that can run the codes.

 

[Bigunit]

Bad battery terminals? Have you replaced the OEM ones yet? They are caca!

 

[USMC_TOP]

Mine did that so I shut it off and back on again and it fixed it's self. This was 6 months ago and it has not done it again. I chalked it up as a glitch.

 

[chad]

that happened to me once when i did some stuff with the fuse box trying to figure out how to do my blackout switch, so i unplugged the battery and it all went away, never came back. do like everyone else says and unplug it first and see what it does.

 

[Best4x4]

Just as a CYA check the plug on the actual 4WD switch pack. When I removed my wife's center dash bezel 2 days after I bought it to remove some aftermarket iphone crap, it just fell out. 2 days earlier when I picked it up the dealership said they replaced the yaw sensor due to a service 4WD fault and traction control fault. I honestly think the fault was from the 4WD switchpack not being fully seated and locked into positon.

 

[Can007]

Something similar happen but not 4x4 warning instead it was oil warning and service warning

 

[Steve #1]

+1 What Bigunit said.

 

[zackcrum]

Ok guys here's an update on the truck. It has stopped all the craziness at start up now. However when I switch to 4high lock and back to 4 high the lights go blank and I have to shut the truck off. When I start it back it will be in 4 high ever single time. Any ideas?

 

[Happy Hummer]

Actuator encoder motor. Available at autozone. 48-116.
About 130.

Chris

 

[zackcrum]

Actuator encoder motor. Available at autozone. 48-116.
About 130.

Chris

I will be headed there tomorrow! Another thing, when the dash lights go out it only says service 4wd.......until I hit the brakes. Then traction failed comes on as well.

 

[4speedfunk]

junk battery?

 

[zackcrum]

junk battery?

I had it tested at AutoZone and it's said to be good.