Gasoline Specifications (U.S. and Canada Only)
At a minimum, gasoline should meet ASTM specification D 4814 in the United States or CAN/CGSB&-3.5 or 3.511 in Canada. Some gasolines contain an octane-enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT). We recommend against the use of gasolines containing MMT. See Fuel Additives on page 9‑52 for additional information.
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Vehicle Overview
GMC’s full-size van sells in fewer numbers than the similar Chevrolet Express
but attracts a loyal clientele. Along with its full-size rivals from Dodge and
Ford, the rear-drive truck-based van ...
Electronic Transfer Case
The transfer case knob is located next to the steering column.
Use the dial to shift into and out of four-wheel drive. ...
Fast Idle System
If the vehicle has this feature it is available only with cruise control.
The manual fast idle switch is operated using the cruise control buttons located on the left hand side of the steering wheel. ...