I just puchased a 1999 Suburban 1500 with 350 engine. When I am towing a trailer do I tow it in Overdrive or 3rd gear?


I use overdrive only when I'm on flat terrain. Otherwise 3rd especially on a grade. It also depends on the trailer I tow the wave runners in OD. You didn't mention what size trailer.
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High Desert SoCal
93 K1500 burb (personal) 350 AT 3" Lift 250K+
02 Honda Civic LX
Looking for a 1990's Miata for an engine swap

I have towed two cars with my suburban so with trailer and car weight it was over 6000lbs each time, both times I was in OD unless I was about to go up or down a grade of any kind.
99 K1500 Suburban LT "THE BEAST"
5.7 K&N & True Dual Exhaust
Hypertech III
05 17" Silverado rims
99 LS 1500 5.3 "THE MULE"
Reg Cab Long Box
285/75/16E Dunlop Rover M/T
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Jason
Welcome to the site! Depending on the size and weight of the trailer determines if I run mine in 3rd.
1997 Chevy K3500
4x4 X-Cab Dually
454 Dual Exhaust
welcome to the site..........
2000 Silverado Z71 Whipple Supercharger, JBA Headers,3" cat back Flowmaster Exhaust, Volant cai, Pioneer Preimer deck,Orion subwoofer,03 signal light mirrors,03 taililghts
Welocme to the site!

Welcome to the site!
Eddie , 2000 Chevy Tahoe Z71 (old style)


Welcome to the site! Whenever I've towed with mine, I use O/D unless it starts downshifting a lot. I also use the Tow Haul mode on the tranny. I'm not sure if the '99s had that or not.
2010 Z/71 Colorado C/C
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2007 Winnebago Adventurer
w/8.1L Chevy & Allison 6spd.
Canyon Lake, Texas
If you dont have the tow haul mode I would agree with most the others. OD if its flat and not shifting much. but go to 3rd in the hills.
David
2004 Silverado 2500 Crew Cab 4x4, Airraid cold air intake, Throttle body spacer, Magnaflow exhaust (true dual to 2 in 1 out muffler), 6" ProComp lift (add a leaf and 5" superlift rear block), Bilstein shocks, 35's (Cooper Disoverer ST's) and 4.10 gears, Rhino Liner, fiberglass tonneau cover, extended stainless steel brake lines, firestone airbags.
1960 Land Rover Series II 88
2002 Nissan Altima (wife's Car)
1999 Saturn SC1 (the new commuter car)
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