blown tranny????

[99Yukon_Z71]

RT, for the symptoms you are explaining it does sound like your Transfer Case. Remember that the power goes from the tranny to the Tcase, and then its sent to the rear wheels and the front wheels. If the Tcase chain or gears are going bad, then it will work in 2wd or 4wd, either or, or it will not work at all. Usually when the lights on the switches blink, it means there is a malfunction in the system. If the differential was bad, you would be hearing grinding or metallic sounds EVERY time, including in 4x4. But you stated that the truck runs fine in 4x4, ruling the diff out. If the Tcase is still under warranty then you should be fine! Goodluck and let us know!

 

[Rollin Thunder]

hey just to update, when I went to test it today, it started in auto 4x4, I pressed 2wd and it grinded like hell and the speedo was showing like 15 mph. IDK what this tells us here, but its just damn confusing.

 

[Max]

Sounds like the tcase shit itself, I've blown a few of those hopefully they warranty that shit so you can pitch the truck.

 

[Rollin Thunder]

**** I havent used 4x4 in like 3 months. WTF.

 

[vatahoelt]

could use it today. we got about 2 inches of snow.

 

[Rivieraracing]

There is an actuator (not sure what it is called) that engages and disengages the transfer case in and out of 4X4, I would bet that is screwing up, it happened on my bosses Titan at the dunes a year ago, had the same symptoms as yours, brinking 4X4 light, in and out of 4x4 on its own, and the god awful noises!! He ignored it and that was a very bad deal, actually exploded the pumpkin on his axle in 2 pieces!! It was actually engaging the 4x4 whenever it wanted to, whether you were driving or not!! Don't continue to drive it, take it to a dealer to get it properly diagnosed (took them 2 days of looking at it to figure it out) before it grenades your other stuff!!

 

[Rollin Thunder]

I just had the actuator motor and control module replaced like 2 weeks ago, like an 800 dollar repair.

 

[Rollin Thunder]

picked it up today, Dealer kept it for 2 days, they found nothing wrong, absolutly nothing, he said gears were good, t-case, tranny and rear end all looked fine, IT drives normal now, no idea, what ever , it was free so now to either sell it or get it traded for somthing!

 

[ecordell]

trade that mofo like last weekend fast lol

 

[blueflamed03]

you need a 2500 or dually sounds like