Other information:
Premium unleaded gasoline meeting ASTM specification D4814 with a posted octane
rating of 93 — (R+M)/2 — is highly recommended for best performance and fuel economy.
Unleaded gasoline with an octane rated as low as 87 can be used. Using unleaded
gasoline rated below 93 octane, however, will lead to reduced acceleration and fuel
economy...
The brake master cylinder reservoir is filled with GM approved DOT 4 (1500) or
DOT 3 (2500/3500) brake fluid as indicated on the reservoir cap. See Engine Compartment
Overview for the location of the reservoir.
Checking Brake Fluid
With the vehicle in P (Park) on a level surface, the brake fluid level should
be between the minimum and maximum marks on the brake fluid reservoir...