Buick Regal Owners Manual

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TPMS Malfunction Light and Message
The TPMS will not function properly if one or more of the TPMS sensors are missing or inoperable. When the system detects a malfunction, the low tire warning light flashes for about one minu ...

Power Steerin
If power steering assist is lost because the engine stops or the power steering system is not functioning, the vehicle can be steered but it will take more effort. ...

Gasoline Octane
Use regular unleaded gasoline with a posted octane rating of 87 or higher. If the octane rating is less than 87, you may notice an audible knocking noise when you drive, commonly referred to as sp ...