Gmc 2000 Sierra User Manual download pdf (Page 276)

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Four-Wheel-Drive vehicles must have the transfer case

in NEUTRAL (N). See “Four

-Wheel Drive” in the

Index for the proper procedure to select the NEUTRAL

position for your vehicle. The towing limits for

four

-wheel-drive vehicles with wheel lift equipment:

Front Towing -- 55 mph (88 km/h) or legal

speed limit and distance is unlimited

Rear Towing -- 55 mph (88 km/h) for

50 miles (80 km).

Consult your dealer or a professional towing service if

you need to have your vehicle towed. See “Roadside

Assistance” in the Index.

Engine Overheating

You will find a coolant temperature gage on your

vehicle’s instrument panel. See “Engine Coolant

Temperature Gage” in the Index. In addition, you will

find a LOW COOLANT, CHECK COOLANT TEMP,

ENGINE OVERHEATED and a REDUCED ENGINE

POWER message in the message center on the

instrument panel. See “Message Center” in the Index.

Overheated Engine Protection Operating

Mode (V8 Engines Only)

Should an overheated engine condition exist and the

REDUCED ENGINE POWER message is displayed, an

overheat protection mode which alternates firing groups

of cylinders helps prevent engine damage. In this mode,

you will notice a loss in power and engine performance.

This operating mode allows your vehicle to be driven to

a safe place in an emergency. Towing a trailer in the

overheat protection mode should be avoided.

NOTICE:

After driving in the overheated engine protection

operating mode, to avoid engine damage, allow

the engine to cool before attempting any repair.

The engine oil will be severely degraded. Repair

the cause of coolant loss, change the oil and

reset the oil life monitor. See “Engine Oil” in

the Index.

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Gmc 2000 Sierra User Manual Page 276