How much torque should be used on the head bolts a 1999 Chevy S-10 2.2L 4 cylinder pickup?

The torque specification for the head bolts on a 1999 Chevy S-10 2.2L 4-cylinder engine is not a single number. It's a multi-step process that typically involves tightening in stages. You absolutely must consult a repair manual specific to your year and engine.

Using the wrong torque can lead to serious engine damage, including a cracked head or blown head gasket. Don't rely on internet information for this critical step. A factory service manual will provide the proper sequence and torque specifications for each stage of tightening. You can usually find these manuals online (e.g., eBay, Amazon) or at auto parts stores.