It depends on the engine. For the 4.3 V6, ~5 quarts (4.5 with the small oil filter, 5 with the big one). The 4.8 , 5.3, and 6.0 V8 should all be ~6 quarts. The 8.1 V8 should be between 6.5 and 7 quarts, depending on the filter. The LB7 series of the Duramax 6.6 diesel is listed as 10 quarts with filter, but can vary by a half quart.GM's gas engines recommend 5W-30, regardless of mileage. You can add some Lucas to it if you need to.
For the diesel engines, it needs to be diesel oil specifically. 15W-40 is commonly used as an 'all around' oil. Depending on the climate where you live, you may want to go with a lighter weight (colder environments) or heavier weight (hotter environments).
Need to know which engine it has and the climate you live in. It's best to consult the owners manual for that info.
Duramax uses 15W40
how long does it take to put a water pump in a 2002 gm sierra truck
The 2002 GMC Sierra-1500 has a 6 yr./ 100000 mi. warranty against rust.
The 2002 GMC Sierra-2500HD has a 6 yr./ 100000 mi. warranty against rust.
about 100000
The EPA range estimate for the 2002 GMC Sierra-2500HD is N in the city, A on the highway.
about 100000 to 150000 miles, with great maintenance 200000
The EPA range estimate for the 2002 GMC Sierra-1500 is 510 mi. in the city, 646 mi. on the highway.
on top of the block. on the left side under the intake manifold.
Plugs, Wires, Air/fuel filters, PCV valve
The 2002 GMC Sierra-2500HD has a V8 engine.
The 2002 GMC Sierra-2500HD has 16 valves.
The 2002 GMC Sierra-1500 has 12 valves.