Driving for Better Fuel Economy
Driving habits can affect fuel mileage. Here are some driving tips to get the best fuel economy possible.
• Avoid fast starts and accelerate smoothly.
• Brake gradually and avoid abrupt stops.
• Avoid idling the engine for long periods of time.
• When road and weather conditions are appropriate, use cruise control.
• Always follow posted speed limits or drive more slowly when conditions require.
• Keep vehicle tires properly inflated.
• Combine several trips into a single trip.
• Replace the vehicle's tires with the same TPC Spec number molded into the tire's sidewall near the size.
• Follow recommended scheduled maintenance.
See also:
Fuel
For diesel engine vehicles, see “Fuel for Diesel Engines” in the Duramax Diesel Supplement.
For Vehicles with gasoline engines, please read this. ...
Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the vehic ...
Transferring Service
Push to request account transfer
eligibility information. The Advisor can assist in canceling or removing account
information. If OnStar receives information that vehicle ownership has changed,
...