6 quarts.
5W30 weight.
5w30
i run valvoline 5w-30 in my 5.3 liter. owners manual will give recomendations.
V6 with a new oil filter holds 5 Qts. V8 with a new filter holds 6 QTS.
6
um proboaly 10W30
30,000 miles is most manufactures reccomendations on everything but the engine oil witch is 3,000 miles
2003 Chevy Silverado 2500HD 6.0l 2004 Chevrolet Trailblazer 2002 Chevrolet Avalanche
I don't think they ever came with diesels, so any 5w30 will do well. If it does have a diesel then 15w40.
PF46 if 5.3.
Counter clockwise