Under the Hood
GM's two-mode hybrid system enables "full" hybrid operation with the capability to cruise on electric power up to 30 mph. The gas engine kicks in if more acceleration is needed, as well as at higher speeds; for maximum grunt, the electric motors and gas engine work together.
At the heart of the Sierra Hybrid is a 6.0-liter V-8 that teams with GM's Electrically Variable Transmission, which integrates two 60-kilowatt electric motors. The motors draw power from a 300-volt battery pack, which recharges itself off the friction generated when you hit the brakes. The engine makes 332 horsepower and enables a towing capacity of 6,100 pounds with rear-wheel drive and 5,900 pounds with four-wheel drive. That's not as much as the regular Sierra's 10,500-pound maximum towing capacity, but it's not too shabby for a hybrid.
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To Use the Engine Coolant Heater
1. Turn off the engine.
2. Open the hood and unwrap the electrical cord. The cord is secured to the Engine Compartment Fuse Block with a clip. Carefully remove the wire tie which bundles the electric ...
Managing the Vehicle Damage Repair Process
In the event that the vehicle requires damage repairs, GM recommends that you take an active role in its repair. If you have a pre-determined repair facility of choice, take the vehicle there, or have ...
Theft-Deterrent Feature
TheftLock® is designed to discourage theft of the vehicle's radio by learning a portion of the Vehicle Identification Number (VIN).
The radio does not operate if it is stolen or moved to a different ...