Re: 2004 yukon xl tranny slipping
 

my fluids are checked regularly and levels were good there was no warning of impending failure in regards to any slippage or shifting issues. I have had a slight noise that no one was able to isolate( wheel bearings, tire ballance/wear patterns were checked and tranny fluid replaced with a new tranny filter just in case and the fluid was red and not burnt then, that was 3- months ago there was no metal found in pan but no change in noise after) that noise was intermitent almost a harmonic that would increase in volume with acceleration and decrease with deceleration but was not there with coasting. Then one day it drove to work fine and upon start up and heading home 3-4 started slipping like hell. 1-2 and reverse work fine.

Re: 2004 yukon xl tranny slipping
 

I called the shop you reccomended Gregg quoted me 2100 for rebuilt with upgraded 3-4 clutches etc and rebuilt tc, turn key installed with 3 yr 75,000 mile warranty. I just have to limp it to him from here but the cost of rebuilt upgraded trannys with slightly less warranty#s online seem to be running in the 14- 1800$ range with me having to do the labor I think taking it there is the best option for me.

Re: 2004 yukon xl tranny slipping
 

I think we are just saying RUN the dex 6. Not saying thats what caused it.. Thats my opinion. But, wouldnt running an inferior fluid speed up the process of the clutches failing>?

Re: 2004 yukon xl tranny slipping
 

I was just stating low fliud level can cause this

Sounds good


If he desides to run Dexron VI thats great, but a transmission shop is going to use DexIII because when you buy it in 55 gallon drums the price difference is alot more than 20 bucks. In my opinion DexVI will not make the transmission last longer.

Re: 2004 yukon xl tranny slipping
 

Dex 6 is more money.. I just went through this. I found WOLFS HEAD ATF fluid is a match with Dex 6. If your at a shop, have them send you a barrel of that. It works great in TONNSSS of applications. Its only 1.5 more a quart. Something small like that.

Re: 2004 yukon xl tranny slipping
 

I appreciate both of your input. I understand that the fluid was unlikely to be the culprit but just as I want to replace the trans with upgraded parts to reduce the likely hood of early failure it is a small price to pay to upgrade the fluid.

Re: 2004 yukon xl tranny slipping
 

alright guys we gone on enough about what fluid it run. so let not argue about it anymore and give the op poster the info he needs. :)

Re: 2004 yukon xl tranny slipping
 

I enjoy the back and forth just shows folks are passionate about their trucks and what they think is the best for them. I listen (read) and research but truly do thank those who take the time to try and help.
Paul

Re: 2004 yukon xl tranny slipping
 

okay i just wanted to make sure it didn't get out of hand. and that you got the info u needed

Re: 2004 yukon xl tranny slipping
 

I just wanted to update I got my truck back from phoenix transmission in weatherford texas today and it runs great. They pulled my tranny put in their mater rebuild kit = clutches, extra clutch pack, steel rings, seals, gasket heavy duty torque converter,filter kit, bushing kit foreward sprag, epc solenoid 3-2 shift solenoid,tcc valve and sleeve, piston, 12qts atf (dexron 3)with 3yr 75,000 mile warranty they had the truck monday and finished it yesterday. I am very pleased with their service and turn around time. I saved $1200-1400 and have a much better warranty than any local shops here would give me. I do appreciate the responses to my initial request for help from all who replied.
Paul

Re: 2004 yukon xl tranny slipping
 

gald you got it fixed

Re: 2004 yukon xl tranny slipping
 

Dex 3?:rolleyes:

Re: 2004 yukon xl tranny slipping
 

yes they say dex3 "multipurpose" not dex6

Re: 2004 yukon xl tranny slipping
 

OK...

If it was my rig, which i have an 05 Yukon XL, i would call the dealer and just give them your vin# and ask what fluid your trans takes.. Im like 97.9% positive its dex6.

It might not even really do anything by running dex3, but what if>????

Re: 2004 yukon xl tranny slipping
 

So far it shifts smooth seems to accelerate stronger but twice it started chugging then died no check engine light almost like fuel starved. First time it restarted right away second it had to sit for about ten min then started right up both times it had been running on the highway 60-70 mph for at least 30 min I changed fuel filter about 5 months ago unsure what it is never had done this before. Shop said it had not done it to them and did not think it tranny related. alternator putting out 14 volts at idle battery about 12.5- 13 motor off .?

Re: 2004 yukon xl tranny slipping
 

Very common on those is the fuel pump. They either die intermittently or just go out 100%. Next time it wont start. Go bang on the gas tank really hard.. See if she fires up?

Re: 2004 yukon xl tranny slipping
 

I was afraid of that when my 98 5.7 would need a new fuel filter you would lose passing power meaning if you pushed on the accelerator it would bog and lose power letting off would increase acceleration, as the demand for fuel increased i guess it could not get enough replacing the filter would cure the problem everytime. This was not acting the same way though so i was thinking it might be pump related.

Re: 2004 yukon xl tranny slipping
 

GM changed to dex6 in 2006. But the transmission is the same anyway so it doesnt matter. GM didnt change a thing in the 4L60E. If you have one of the new 6 speed autos then it matters

btw it says right on the dipstick what it had for factory fill.

Re: 2004 yukon xl tranny slipping
 

I am very happy with the tranny right now my wife just reminded me that this hesitation and dying did happen before i changed my fuel filter 4-5 months ago and when i did the filter was broken! The internal portion was loose and would slide back and forth you could shake it and it would rattle like hell. the new filter did not and the problem did not reoccur. The old filter was a fram i believe and so was the new onw i put on. I forgot about that being like that, i will change filters and see if this happens again.

Re: 2004 yukon xl tranny slipping
 

You need to get a fuel pressure gauge on it so you know what pressure your running, spec is (55-62 psi)

I agree with lyrikz, bang on the tank if it does not start, rubber mallet works best.

Re: 2004 yukon xl tranny slipping
 

I agree but with what happened before the internal component of the filter broke so looking into the end you could see this canister like piece moving around and the hole in it was lower than the outlet hole so as it moved it would block the opening so less or no fuel would get through so i would expect lower values in pressure at the fuel rail in any case a new filter is cheaper than a $300 pump as a first try, but i have no guages anyway can they be rented or borrowed from autozone o'reily etc? plus its so erratic i never know when it might happen so i guess i would need to buy some and keep in the truck.

Re: 2004 yukon xl tranny slipping
 

i hate fram plainn and simple they are cheap you'd be better witha gm filter or a puraltor filter

Re: 2004 yukon xl tranny slipping
 

you know it is one of those things you go to autozone to get a number of items and get the filter they have on the shelf. I had totaly forgotten about the filter being broken when i took it off until my wife reminded me even my son who was helping knew it wasn't right for it to be broken never had i had a fuel filter break before I do not know if thats the case now I have been driving the truck for the last two days to see if it dies on me but so far no. When I get paid next week i'm going to replace it not with a fram!,then if it happens again i'll consider the pump as the next item to check. I do have to say the tranny is working well and will consider replacing with dex 6 when i need to service the tranny next. I believe the humming/harmonic noise i get from the front that did not change with the tranny fix may well be front pinion we will cross that bridge when we get there!

Re: 2004 yukon xl tranny slipping
 

I was told that FRAM and PURALATOR are the same filters made at the same factory just painted the different names on them, May be wrong.
Eric

Re: 2004 yukon xl tranny slipping
 

fram and puralator or most defiantly not the same filter ever cut them open? totaly diffrent filter