All about tires

Everything you wanted to know about tires.

Example- P 235 / 60 / R-16 97S

(P) Passenger (P-Metric) Tire- The United States version of a metric tire sizing system. The letter P as the first character in the tire size means a passenger vehicle tire engineered to standards set by the U.S. Tire and Rim Association.

Rotate tires every 6,000 miles. See this picture for proper procedure. On many late model Chevrolet, Buick, Pontiac, GMC, Cadillac and Oldsmobile cars and trucks, the Tire Pressure Monitor(TPM) system must be relearned so the system will know where each tire is located.

One way to tell when it is time for new tires is to check the tread wear indicators, which will appear when your tires have only 1/16 inch (1.6 mm) or less of tread remaining. These indicators are flat spots between the treads.

Tires should be checked for abnormal wear patterns periodically. Just rub your hand around the tire and feel for roughness, flat spots, or feathering.

Does you car need a Front End Alignment?

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How Things Work

Evaporative Emission System Operation and Components

The Evaporative Emission (EVAP) control system limits the fuel vapors from escaping into the atmosphere. The EVAP transfers the fuel vapors from the sealed fuel tank to an activated carbon (charcoal) storage device (EVAP canister). The EVAP canister stores the vapors until the engine is able to use the extra fuel vapor. When the engine is able to use the extra fuel vapor,

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Common Engine Codes

Coolant Temperature Sensor Code P0117 Or P0118

The engine coolant temperature (ECT) sensor is a variable resistor, that measures the temperature of the engine coolant. The powertrain control module (PCM) supplies 5 volts to the ECT signal circuit and a ground for the ECT low reference circuit.

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