G80 staying locked after new spider install

[phatz_hatz]

Ok, so i have just swapped out my old shredded spiders with new ones, the rack and pinion are fine, no wear on them, the clutches seemed a lil burnt up but not anything to crazy .

I put full syn 75w90 with the LS additive, everything i read is either thats the problem or it doesnt eefect it all. with that being said ive driven it 60 mph put it in reverse and cut the wheel did same thing in drive and it just will not unlock im gonna change it at 500 miles to ac delco gear fluid and hopefully that fixes it but its driving me nuts that i know i put everything tg correctly and i just spent 600 dollars on the spider kit from a chevy dealer, if anyone could have any other diagnosis it would be much appreciated.

I have 08 Tahoe with 112000 on it with the 5.3 in it. im just scratching my head at this point and have no idea what to do. is there any way maybe i put the block in the wrong way that goes in between spiders to keep it locked ?

 

[exp500]

Likely you aren't the first one inside it. Probably why spiders broke. Find the Overhaul Manual Might be Unit Parts service Manual too.

 

[phatz_hatz]

Likely you aren't the first one inside it. Probably why spiders broke. Find the Overhaul Manual Might be Unit Parts service Manual too.

so i should most likely start looking for a new carrier with a 3.73 gear ratio, or just go to junk yard and get a whole new rear axle.

 

[OR VietVet]

If you are looking for an easy way to get back on the road just get a diff from a salvage yard and bolt it in and go.

 

[phatz_hatz]

yea i figure this would be the easiest and most likely most effective way to fix it, i have no idea how many miles i am going to get out of this and hoping it does not grenade on me for a couple thousand before i can find one

 

[OR VietVet]

Make sure that you get a copy in writing of the warranty that the salvage yard gives you.

 

[exp500]

And don't use the additive this time!

 

[swathdiver]

Ok, so i have just swapped out my old shredded spiders with new ones, the rack and pinion are fine, no wear on them, the clutches seemed a lil burnt up but not anything to crazy. i put full syn 75w90 with the LS additive, evverything i read is either thats the problem or it doesnt eefect it all. with that being said ive driven it 60 mph put it in reverse and cut the wheel did same thing in drive and it just will not unlock im gonna change it at 500 miles to ac delco gear fluid and hopefully that fixes it but its driving me nuts that i know i put everything tg correctly and i just spent 600 dollars on the spider kit from a chevy dealer, if anyone could have any other diagnosis it would be much appreciated. i have 08 tahoe with 112000 on it with the 5.3 in it. im just scratching my head at this point and have no idea what to do. is there any way maybe i put the block in the wrong way that goes in between spiders to keep it locked ?

I suspect its the limited slip additive, get rid of that, our trucks don't need it.

 

[phatz_hatz]

im hoping that changing the fluid will fix the problem but if it doesnt, it would just make more sense to buy a brand new one for 1400 compared to one with 115 on it for 1100 at this point

 

[exp500]

Buy the Scrap yard/Upullit, It's complete so you don't have to learn how to setup a rear end. Save your money for fixing next find until you know overall condition of truck.