October 22, 2003

GM full-size vans receive vehicle stability systems

Warren, Michigan – The 2004 GMC Savana and Chevrolet Express 15 passenger full-size
vans will offer a stability enhancement and traction control system, announced GM.
The vans will go on sale beginning in early November.

“Equipping our 15-passenger vans with the StabiliTrak stability enhancement system
makes what we believe is already a very safe vehicle even better by providing our
customers with another important tool to help them avoid some of the conditions that
can lead to a crash,” said Robert C. Lange, GM executive director, structure and
safety integration.

StabiliTrak with traction control is standard on all 2004 GMC Savana and Chevrolet
Express 15-passenger vans produced after October 6.

“We expect that the addition of this important safety system will further
distinguish the Savana and Express from all other 15-passenger vans,” said Ray
Chess, vehicle line executive for the vans.

Stability enhancement systems help drivers maintain control of vehicles during
certain difficult driving conditions such as ice, snow, gravel, wet pavement and
uneven road surfaces; as well as in emergency lane changes or avoidance maneuvers.

GM’s system works by recognizing wheel skid. Sensors detect the difference between
the steering wheel angle and the direction the driver is actually turning by
“reading” the steering wheel position, the amount of sideways force in play, vehicle
speed and the vehicle’s response to steering wheel input.

The system then uses the brakes to enhance control of the vehicle’s direction and to
help keep it on course. It automatically reduces the engine torque and applies
precise amounts of pressure to front right or left brakes to help keep the vehicle
on track. These brake and engine interventions help realign the vehicle’s actual
path with that being steered by the driver.

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