See also:

General Information
For service and parts needs, visit your dealer. You will receive genuine GM parts and GM-trained and supported service people. Genuine GM parts have one of these marks: ...

Footnotes — Maintenance Schedule Additional Required Services — Severe
a) Or every two years, whichever comes first. b) Check all fuel and vapor lines and hoses for proper hook-up, routing, and condition. Check that the purge valve, if the vehicle has one, wor ...

Engine Identification
The eighth character in the VIN is the engine code. This code identifies the vehicle’s engine, specifications, and replacement parts. See “Engine Specifications” under Capacities and Speci ...