1/2 Ton 1990 Suburban, Scary??

ToyMater · Jan 25, 2007

I just bought a 1990 Suburban, 5.7 efi, auto, 4x4, 1/2 ton. Does anyone have any opinion on towing with an automatic suburban a tandem axle carhauler with a 3900 pound truck on the trailer?? Any info or opinions would be greatly appreciated
Thanks
CoDy

GRW · Jan 25, 2007

Break early, & make sure you have good trailer brakes.....on both axles.
If it has the same rear end as the 86's let me know when you need new axles.
I have a set that have less than 1500 miles on them. :;

I have a 3/4 now

ToyMater · Jan 25, 2007

lol, ok. I will keep that in mind. Thanks again

wheelinjp · Jan 25, 2007

It is just htat the gearing is not optimal. I wouldnt regear it though, just throwing good money away on a temporary thing. I know people that have towed with a 1/2ton for years without trouble. There is just a reason they make 3/4tons for towing, brakes, and gearing are all better for it. I say **** it run it. Just keep track of the tranny temp on long hills if it has an o/d tranny.

archer1965 · Jan 25, 2007

I had a 1/2 ton 89 Burb with a 5.7

First thing, replace the trans with a T400 and add a cooler (and a trans temp gauge). If its lifted, you'll want to gear down too. You would have been better served to buy a 3/4 ton, but too late now.
I went through two 700R4's and one set of 4.56 gears towing a travel trailer (6 inch lift and 35's).

Brian H · Jan 26, 2007

I have 3.73s in my 2wd tahoe and I put a tbi spacer and a super chip programer in it. It tow pretty well. Brake early and leave distance between you and the car in front of you.

ToyMater · Jan 26, 2007

Well.. It just has to work for the next year or so then I will be sellin it and gettin a cummins

. It doesnt have any lift and it only got 31x10.50's on it, I am not sure about the gearing but I am hoping to have trouble free towing for like 3 outings a year of 150 mile drives. I wont be towing like crazy, just once in a great christmas I will be. I appreciate all the input. The other tranny that was mentioned earlier other than the 700r4, is that the cast iron 4spd you guys were talkin about??