Buying a 2024 SLE 6.6 next weekend school me

[Icelink]

Ford guy here buying first gmc 

 

Talk me in/out of the 6.6 gasser with 10 speed gmc built allison 

 

Is this allison the same in the 6.6 gasser as the duramax?

 

Been seeing some horror stories about this tranny time I've been reading online extensively for the past 24 hours 

 

First year in the gasser for this tranny ?

 

Just came from a ford with tranny issues 

 

I don't know if I should back out of this deal from what I read online, hard shifts, valve body replacement etc etc etc 

 

I really don't know what to do as there are engine/tranny issues with every brand every combo right across the board

 

Criticism is appreciated and hit me hard with straight up facts 

 

Also, what the heck is up with all the ads on this site I could barley complete my profile 

 

Cheers!

 

And thanks for having me 

 

- Mike from BC Canada 

 

 

[Capt Bob]

Well, it’s not an identical Duramax version tranny but mine is working great.

 

Takes a little doing to check and add fluid but that’s relative to one’s mechanical abilities.

 

Yes, first year for this hookup that I recall.

 

Maybe you should consider a Ram instead.

 

Get an Ad-Blocker. I use 1Block. Works very well on my iPad.

[lsttype]

24 GMC here. I absolutely love my 10 speed gasser. I pull a 9k+ camper. It did excellent.  Traded a 22 F250 with the 7.3 Godzilla for it. Didn't like the Ford at all. Had a 2500 Cummins Ram and nothing but problems including transmission failure.  GMC Build quality seems way better than the Ford. 

[Icelink]

2 hours ago, Capt Bob said:

Well, it’s not an identical Duramax version tranny but mine is working great.

 

Takes a little doing to check and add fluid but that’s relative to one’s mechanical abilities.

 

Yes, first year for this hookup that I recall.

 

Maybe you should consider a Ram instead.

 

Get an Ad-Blocker. I use 1Block. Works very well on my iPad.

 

[Icelink]

Thanks for the feedback, I'll look into the ad blocker 

 

No problem with the no dipstick for transmission I've dealt with that on ford's before 

 

Not interested in a Dodge but thanks 

Edited August 4, 2024 by Icelink

[Icelink]

1 hour ago, lsttype said:

24 GMC here. I absolutely love my 10 speed gasser. I pull a 9k+ camper. It did excellent.  Traded a 22 F250 with the 7.3 Godzilla for it. Didn't like the Ford at all. Had a 2500 Cummins Ram and nothing but problems including transmission failure.  GMC Build quality seems way better than the Ford. 

Thanks for the reply we are getting rid of our 18 F150 with transmission issues ( CDF drum failure) at 75,000 kms

 

Never buying a half ton ever again no matter what brand/options 

 

I'm keeping my other 2019 F250 6.2 gasser with 6 speed , that combo has served me well 

 

Never drove the godzillla and not interested in diesel 

 

Thanks for the reply 

[AndrewF]

Only have 1600 miles on my 2024 but so far I really like the Allison with the 6.6 gas. Towed some fairly light loads over the weekend for the first time (5k-6k lbs) and it did very well even up some steep hills at highway speeds.  The 10 speed kept the motor rpms where they should be and it shifts quickly but not hard. Time will tell how the reliability will be but so far so good. 

Edited August 5, 2024 by AndrewF

[dal1980]

5500 miles on my 24 with 4500 of that towing about 5k with another 1k in the bed.  Nothing but good things to say about this gasser/Trans combo.

[BCGM]

IceLink sending you a message on here 

[Pryme]

I’ve always run an ad blocker so never see any ads on any site. 
 

no experience with the 10spd but my 22 6.6 gas with 6spd has been awesome as far as engine and transmission etc. no oil burning and tried and true 6spd has been plenty good for me very smooth. 
 

welcome aboard