What kind of mileage can you expect out of a 99 suburban?
it all depends on how the vehicle has been looked after i.e regular service and repairs done when needed then yes this vehicle could do a lot more miles. If the owner has just abused it then you could be getting yourself involved in a lot of time and money.
My '99 Beast has been a workhorse, move 3 households, pulled trailers all over, sometimes with one or two horses, gets 12-14 mpg, got a 2nd transmission at 181,000 and is currently at 187,500. You can't kill 'em.
I also have a 1999 suburban with the 350 engine. I get between 16.5 and 18.5 MPG. Vehicle currently has 83k miles on it.
It sure does depend on the its condition but I wouldn't be concerned if the truck was taken care of the fluids look good. I have had many Suburbans and all of them over the miles you are looking at (including 230k on a 454). They have had some issues but nothing huge and nothing surprising, meaning I knew what was the cause and/or reason. The vortec 350's of those years did have some issues (so I am told) so make sure you keep up with the maintenence including all filters. If it is a k2500 with a 454 I would job all over it, but I am also basis.
i had a '99 half ton 4x4 with the 350. i got as much a 19 mpg and as little as 11; it all depended on how much of a jerk i was while driving. look out for mushy transmissions and bad transfer cases in the 130k mile range. put the truck in 4 hi and cut the wheel left and right. if it stalls, the transfer case is bad.
Had a 99 w/a 5.7 C1500 and got 14 to 17 mpg; keep the OEM spec sized tires on it for best mileage & ride IMO
I have a 97 suburban 1500 with a 350 engine. The motor was changed at 190k but the transmission is original and has 375k on it. Best truck ever made
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