What kind of gas should I use in this SUV
reg, is fine and that is what is recommend, using Prem is only draining your wallet faster. Now if you do some engine up-grades you might want to go up a grade. The ehgine is just a Chev truck engine (same as the Avalanche and there full size trucks) Best of luck
You can also not put gas in it anymore, sell it and buy something less guzzling?
you can use reg , but on most trucks that have the 6.0 liter ,GM Recommands using the higher grade because it helps the engine run alittle better and also the better gas you put in , the better gas mileage you get. Most of GM Trucks cam with the 5.3 not the 5.7 in that year.
They actually quit putting the 5.7 litre in pickups in 1999. In 2005, the engine choices would have been the 4.3 liter V6 (262), the 4.8 liter V8 (292), the 5.3 liter V8 (327), and the 6.0 liter (364). So, while the 6.0 liter was usually put in heavy-duty trucks, it was offered in the Chevy pickups in 2005. However, it was almost certainly tuned differently for the Denali and Escalade applications. Oh yeah, regular ought to be fine for it.
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