The 1999 Chevy Silverado 1500 requires 5W-30 engine with a capacity of 4.5 q for the 4.3 L engine and 6.0 q for all other engines.

The 2000 Chevy Silverado 1500 requires 5W-30 engine with a capacity of 4.5 q for the 4.3 L engine and 6.0 q for all other engines.

The 2001 Chevy Silverado 1500 requires 5W-30 engine with a capacity of 4.5 q for the 4.3 L engine and 6.0 q for all other engines.

The 2003 Chevy Silverado 1500 requires 5W-30 engine with a capacity of 4.5 q for the 4.3 L engine and 6.0 q for all other engines.

The 2004 Chevy Silverado 1500 requires 5W-30 engine with a capacity of 4.5 q for the 4.3 L engine and 6.0 q for all other engines.

The 2005 Chevy Silverado 1500 requires 5W-30 engine with a capacity of 4.5 q for the 4.3 L engine and 6.0 q for all other engines.

The 2006 Chevy Silverado 1500 requires 5W-30 engine with a capacity of 4.5 q for the 4.3 L engine and 6.0 q for all other engines.

The 2007 Chevy Silverado 1500 Classic requires 5W-30 engine with a capacity of 4.5 q for the 4.3 L engine and 6.0 q for all other engines.

The 2007 Chevy Silverado 1500 requires 5W-30 engine with a capacity of 4.5 q for the 4.3 L engine and 6.0 q for all other engines.

The 2008 Chevy Silverado 1500 requires 5W-30 engine with a capacity of 4.5 q for the 4.3 L engine and 6.0 q for all other engines.