Unable to Connect to OnStar Message
If there is limited cellular coverage or the cellular network has reached maximum capacity, this message may come on. Push Q to try the call again or try again after driving a few miles into another cellular area. Vehicle and Power Issues OnStar services require a vehicle electrical system, wireless service, and GPS satellite technologies to be available and operating for features to function properly. These systems may not operate if the battery is discharged or disconnected.
See also:
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See Recommended Fluids and Lubricants on page 11‑12. ...
Fuel Additives
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The Package
Unlike the GMC Yukon and other truck-based SUVs, the Acadia is based on an
all-new carlike platform. Because it doesn't use a truck's heavy-duty
underpinnings, there's more room in the cabin for s ...