Have a 2020 Silverado Z71 Crew with the BabyMax. Just turned 60,000 miles this morning on the way to work. I tow a bass boat a lot, and my lifetime fuel mileage is 19.8 MPG. Love the engine, but did have the transmission take a dump back in January. Was repaired under warranty. I’ll probably drive it until the warranty is about up and evaluate then. Love the torque and how it pulls my boat. The only other truck I’ve had that pulled this good was a F250 PowerStroke.

Is that the 10 speed? I've heard 8 speeds were a problem.

I'm think about going after the AT4 with the 3.0 diesel.

I have the same truck so far I love it. The Babymax comes with the 10 speed tranny. My lifetime is about the same and also like the way it tows. Got 30mpg on a trip to
Vegas

Yes, it is the 10-speed.

Still love mine, does seem to drink the DEF though. Gas mileage is fantastic. No issues so far through 71,000 miles.

What are the 1500s rated to tow with this motor? Looking for occasional 20' gooseneck usage, short tows, medium-to-highway speeds.

Haven't noticed mine doing that (DEF usage) except when towing or very hilly terrain.

Would probably do it but stopping it would be the issue in half ton truck.

If you are relying on your truck to stop one of those trailers, you have your trailer brakes set wrong.

Its low, like 8000#.


Big reason I didn't buy one

Mine tows a Bass Boat likes it not even there and max's out near 13K pounds. I personally think North of about 10K pounds you need more truck.
I have seen mid 40MPG on road trips and commonly see 18-20 city and 24 plus highway in fast lane not babying it at all.

The 2024 GMC Sierra 1500 AT4 trim level with the 3.0-liter Duramax Turbo Diesel engine has a maximum towing capacity of 13,300 pounds. The 3.0-liter Duramax Turbo Diesel engine comes standard on the AT4 trim level and has 305 horsepower and 495 lb-ft of torque.

Wow they must have gotten a lot stouter. The previous models had a real low tow rating.

Man, I'm worse than a woman..... I'm gonna go with the V8, because I can get one hell of a deal. I'll know tomorrow morning.

GasGuzzler would be proud.

Fact checked to be true

A gm v-8? In a half ton? Man at least with the diesel you get the upside of good mileage. Haven’t trusted gm’s v8’s since they added the dang cylinder deactivation.

Yeah, but I got 11k off MSRP. That can buy a lot of fuel. I couldn't pass that up.

I'm currently getting 12MPG in my 2500HD

What did you get....the AT4? My veterinarian buddy has one with 160k on it. It's been a great truck.

Yep, AT4

Don’t forget you have to use premium unleaded in that larger v8

Yep.

I’m not sure they do that anymore, at least they don’t on the 6.2 liter. It’s a good engine

The mileage isn’t great for sure. I’m starting to see more 16-17 mpg trips on the highway though.

I'll take those numbers any day.

They do, and it is also on the 6.2.

Redchevy have you had a bad experience with the cylinder deactivation?