Might Be Getting Gassed

LBZ

Super Moderator
Staff member
Jul 1, 2007
9,557
13
38
42
B.C.
I pick up the AT4 on Thursday afternoon.

I had read they use about 75% of the old trans that was behind the 6.0 and beefed up the newer parts they replaced/upgraded. Haven’t read anything on the converter being an issue yet or if it’s the 6.2 one now. Got my gm tech buddy looking into that for me. Good news is if it is and it shits the bed there’s lots of aftermarket choices!!
 
Last edited:

ShopSpecialties

Active member
Jun 4, 2008
198
33
28
Grass Range, Montana
I pick up the AT4 on Thursday afternoon.

I had read they use about 75% of the old trans that was behind the 6.0 and beefed up the newer parts they replaced/upgraded. Haven’t read anything on the converter being an issue yet or if it’s the 6.2 one now. Got my gm tech buddy looking into that for me. Good news is if it is and it shits the bed there’s lots of aftermarket choices!!
All I did was look up the part number to see if it was the same as the 6.0 trucks and thought it was odd when it also matched those older vehicles. Maybe GM has a warehouse full of them and thought it would be a good way to get rid of them all.

Sent from my XT1710-02 using Tapatalk
 

LBZ

Super Moderator
Staff member
Jul 1, 2007
9,557
13
38
42
B.C.
My buddy at gm just looked it up and from his end they are different p/n’s. 15-20 suv is different from 19-20 HD truck so I dunno. He was gonna get his parts guy to look them up.
 
  • Like
Reactions: ShopSpecialties

LBZ

Super Moderator
Staff member
Jul 1, 2007
9,557
13
38
42
B.C.
This is the p/n he found
24272305
According to summit though that converter you found does fit a pile of shit including the hd trucks.
The one my buddy gave me doesn’t even fit a 2020 that I could find. Only like a 2015 1/2 ton so I dunno. Something is fcky.
 
Last edited:

LBZ

Super Moderator
Staff member
Jul 1, 2007
9,557
13
38
42
B.C.
17mpg average over 500 miles hand calculated. Bang on with lieometer. Mixed hwy and city driving, towing my little utility trailer around for 120 miles. Doing 75 - 80mph on all the new highways. Not terrible I’d say for brand new gas 1 ton
 
  • Like
Reactions: ShopSpecialties

2004LB7

Well-known member
Dec 15, 2010
2,896
108
63
Norcal
Sun in our area has just been a little orange ball for about a month now. Just cleared up yesterday. First time seeing blue for weeks
 

Dozerboy

Well-known member
Jun 23, 2009
4,295
35
48
TX of course
17mpg average over 500 miles hand calculated. Bang on with lieometer. Mixed hwy and city driving, towing my little utility trailer around for 120 miles. Doing 75 - 80mph on all the new highways. Not terrible I’d say for brand new gas 1 ton
Yeah it’s pretty impressive with those trucks are getting. I hope it turns out to be a great motor. I don’t wanna try and keep my old 6.0L around forever.
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)