What is the torque specs rocker nuts for a 99 Chevy Suburban?

The torque specification for rocker arm nuts on a 1999 Chevy Suburban's engine will depend on the specific engine type (e.g., 4.8L, 5.7L, etc.). There isn't a single universal spec.

You absolutely must consult your vehicle's repair manual. This manual will provide the correct torque specifications for your engine. Using the wrong torque can lead to damaged engine components or even catastrophic engine failure.

You can find repair manuals online (some are free, some are paid), at auto parts stores (like AutoZone, Advance Auto Parts, etc.), or from a mechanic. The manual will have detailed information specific to your Suburban's engine. Failing to use the correct torque is risky and could be costly.