2017 Duramax

duratothemax

<--- slippery roads
Aug 28, 2006
7,139
10
0
Wyoming
Supposedly, Aisin made a lot of improvements and upgrades to the 2014+ AS69rc, compared to the older AS68rc that has been around since 2008 in the chassis-cabs.
 

DIESELMAFIAPER.LB7

<----new hotness
Jan 17, 2010
5,163
12
38
idaho
shop.dieselmafiaperformance.com
Yep they are going to lose there ass on warranty work. I'd like to see them use the 68 but tune it the way we do in the aftermarket they would handle stock power fine even at 900 ft lbs imo mine has done fine with over 1k tq my parents trucks have done fine in the 900 range for 80k miles each my dad's tows very heavy to
 
Last edited:
Jun 22, 2015
72
0
0
Mountain Home, ID
Yep they ate going to lose there ass on warranty work. I'd like to see them use the 68 but tune it the way we do in the aftermarket they would handle stock power fine even at 900 ft lbs imo mine has done fine with over 1k tq my parents trucks have done fine in the 900 range for 80k miles each my dad's tows very heavy to
I personally think they need to find a transmission they really like and stick with it. Just giving it updates along the line. Duramax/Allison has been out for what 15 years now? They had growing pains and aren't perfect but kept updating getting better and better.

Sent from my HTC6525LVW using Tapatalk
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
21,658
5,805
113
Phoenix Az
Yep they ate going to lose there ass on warranty work. I'd like to see them use the 68 but tune it the way we do in the aftermarket they would handle stock power fine even at 900 ft lbs imo mine has done fine with over 1k tq my parents trucks have done fine in the 900 range for 80k miles each my dad's tows very heavy to

have you torn them down and inspected them?
 

Big Block 88

Multiple choice muscle
Nov 3, 2008
4,665
0
36
38
Kansas when I am home
I said this exact thing earlier in this thread. It wasn't recieved well.

Point is, the lb7 has enough tq to pull any load that is "safe" behind a 3/4 pickup truck.

Our lmls get HORRIBLE mileage. It's time to get the fuel economy up. I used 30 gallons of fuel pulling a 14,000lb boat 200 miles. 30 freaking gallons!

You have issues... Our lml is around and somtimes over 30k and the mileage is better than lb7 or lbz could ever dream of...
 

coker6303

Keep Calm and Chive On!!
Aug 6, 2009
2,484
0
36
40
Houston, TX
6.7 cummins is the new generation 6.0 powerstroke... Needs head studs to hold any power! Lol

At least the ford had a good trans... :roflmao:
 

WolfLMM

Making Chips
Nov 21, 2006
4,005
25
48
38
AL
17 highway at 65mph.... Wife's 6.2 Yukon gets 16.9 in town....

Both of our LMLs get the same terrible mileage... But I still love the trucks.

Big Block, come hook your lml to my boat, I promise you, you won't make more than 200 miles before you have to refuel.
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
21,658
5,805
113
Phoenix Az
be curious what my dads '15 gets. his '10 LMM got 15 in town and 10 towing. truck was 100% stock as is the '15
 

coker6303

Keep Calm and Chive On!!
Aug 6, 2009
2,484
0
36
40
Houston, TX
My 15 mileage wasn't bad at all when it was stock. I drove it that way for 12k miles, never a complaint but I didn't hand calc much. Just watched the DIC