See Figure 1
The Vehicle Emission Control Information Label is located in the engine compartment (fan shroud, radiator support, hood underside, etc.) of every car produced by General Motors. The label contains important emission specifications and setting procedures, as well as a vacuum hose schematic with various emissions components identified.
When servicing your Chevrolet, this label should always be checked for up-to-date information pertaining specifically to your car.
**Always follow the timing procedures on this label when adjusting ignition timing.