Is the 5.3 really okay for towing

[John H Daniel]

Finally letting my 2011 Denali reach its potential; dead. Bought a high mileage unit for a sleep pad and tow vehicle. Had the trans rebuilt when it started stuttering. Now, 13,000 miles later its doing it again.
Looking to go to a 2-3 year old Tahoe; don't really need the Denali features.
Other than being the winter daily, it will be used to tow a car hauler; ~8,000#. I was a little surprised to see GM gives the GCWR for both the 5.3 and 6.2 at 14,500# with max trailer package (14,000# without).
The question for you folks is how does the 5.3 really handle it?
I live in Illinois, so not many mountains to deal with. I think I can handle going a little slower up a few hills now and then and save the $ and concerns over the 6.2.
One question is how hard is it to find a Tahoe with Max Trailering package?

Other thoughts?

 

[ReaperHWK]

14k pounds?! Where do you get that number. 5.3 and 6.2 are around 8k pounds for towing.

That trailer is too heavy for any Tahoe; I’d get a diesel.

A Tahoe CAN tow 8k pounds but it’s not going to do it easily and wear it out fast, especially the trans. I personally only go up to 6k with mine. 2026 Tahoe 6.2 with max tow.


If you were towing that with your old Tahoe no surprise your tranny went twice…..

Look for a used 2500 sierra diesel.

 

[WalleyeMikeIII]

He said GCVWR: Gross Combined Vehicle Weight Rating, which is the max of the Trailer plus Tow Vehicle totally Loaded…

For the Tahoe, that’s about the right number, depending on the drivetrain and cooling package.

5.3 will tow well, but the 6.2 will do it better. Check the capacity sticker on the specific vehicle you are looking at, and make sure it meets or exceeds your needs.

If you are towing ~8000 often, you definitely want the max tow for the extra cooling it provides, your transmission will thank you later. Plus, I’m pretty sure you can’t get to your 8000# target without it.

Keep up on the transmission service and driveline service too.

 

[Stbentoak]

Better yet, always have more than you need for towing. And in my book that means way more than you need.... Sounds like a job for a 2500 to me.

 

[ReaperHWK]

He said GCVWR: Gross Combined Vehicle Weight Rating, which is the max of the Trailer plus Tow Vehicle totally Loaded…

For the Tahoe, that’s about the right number, depending on the drivetrain and cooling package.

5.3 will tow well, but the 6.2 will do it better. Check the capacity sticker on the specific vehicle you are looking at, and make sure it meets or exceeds your needs.

If you are towing ~8000 often, you definitely want the max tow for the extra cooling it provides, your transmission will thank you later. Plus, I’m pretty sure you can’t get to your 8000# target without it.

Keep up on the transmission service and driveline service too.

I see. Still OP will me maxed with 8000lb trailer. That’s just asking for trouble. Budget a new trans at 80k miles.

I’ve towed my car trailer with an f150 and the same load with a 2500 diesel. The difference is astronomical. 7000lb trailer.

Also with these heavy loads you need a WDH on a Tahoe or f150. On a 2500 no need. Makes turning and reversing a dream without it.

 

[John H Daniel]

Wouldn't want a pickup for my needs. The towing is occasional use, <6 times a year 2-300 round trip to local tracks. And I need an SUV to camp in for occasional weekend events.
The real question is how rare is the Max Trailer Package; the code used to be K5L? Is it more typical on certain trim levels?
Interestingly, the trailer weight is lower as you go up from the 5.3. My understanding is it's all about system weight for the brakes, as they have to assume no trailer brakes, tho most folks with a trailer that big have brakes.

 

[ReaperHWK]

Wouldn't want a pickup for my needs. The towing is occasional use, <6 times a year 2-300 round trip to local tracks. And I need an SUV to camp in for occasional weekend events.
The real question is how rare is the Max Trailer Package; the code used to be K5L? Is it more typical on certain trim levels?
Interestingly, the trailer weight is lower as you go up from the 5.3. My understanding is it's all about system weight for the brakes, as they have to assume no trailer brakes, tho most folks with a trailer that big have brakes.

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6.2 is heavier and subtracts from the GVWR. But it’s more capable for towing power. I have that with the max tow.

Honestly you should chat with AI about this it will give you all the math and figure this all out for you. Tell it exactly what trailer you have etc etc.

Grok is good at calculations like this. It may even tell you you are going to overload the truck and get a 2500 lol.