Chevrolet 2007 Avalanche Specifications download pdf (Page 216)

100

101

Malfunction Indicator Lamp

Check Engine Light

A computer system called OBD II (On-Board

Diagnostics-Second Generation) monitors operation of

the fuel, ignition, and emission control systems. It makes

sure that emissions are at acceptable levels for the

life of the vehicle, helping to produce a cleaner

environment.

The check engine light

comes on to indicate that

there is an OBD II

problem and service is

required.

Malfunctions often are indicated by the system before

any problem is apparent. This can prevent more serious

damage to your vehicle. This system is also designed

to assist your service technician in correctly diagnosing

any malfunction.

Notice: If you keep driving your vehicle with this

light on, after a while, the emission controls

might not work as well, your vehicle’s fuel economy

might not be as good, and the engine might not

run as smoothly. This could lead to costly repairs

that might not be covered by your warranty.

Notice: Modiﬁcations made to the engine,

transmission, exhaust, intake, or fuel system of

your vehicle or the replacement of the original tires

with other than those of the same Tire Performance

Criteria (TPC) can affect your vehicle’s emission

controls and can cause this light to come on.

Modiﬁcations to these systems could lead to costly

repairs not covered by your warranty. This could

also result in a failure to pass a required Emission

Inspection/Maintenance test. See Accessories

and Modiﬁcations on page 5-3.

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Chevrolet 2007 Avalanche Specifications Page 216

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