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GM focuses on fuel economy
GENERAL Motors Corp, struggling to sell trucks as gasoline prices soar, is boosting fuel economy for full-size pickups and sport utility vehicles by as much as 7 percent by making them lighter and more streamlined.
Mechanical and aerodynamic changes and the cut in weight will help models including Chevrolet Silverado pickups improve to 15 miles per gallon in the city and 21mpg on the highway, a 1mpg gain, GM said yesterday in a statement. They'll carry an XFE badge, for 'extra fuel economy,' and go on sale next quarter.
The moves are part of GM's response to gasoline near US$4 a gallon that chopped its United States light-truck sales by 23 percent through July. Chief Executive Officer Rick Wagoner is shifting the Detroit auto maker's emphasis to cars from trucks and adding more engineers to projects that pare existing models' fuel use.
'We fast-tracked the XFE models to get them into dealer showrooms as quickly as possible,' Gary White, GM's chief for full-size trucks, said in the statement.
The new designs for the Silverado and GMC Sierra pickups and the Chevrolet Tahoe and GMC Yukon SUVs save weight by using more aluminum parts and trim fuel consumption with tires that produce less friction on the road, GM said.
The largest US auto maker lowered the vehicles' suspensions and made body changes to cut wind resistance, according to Bloomberg News.
GM also is adding hybrid versions of the Silverado and Sierra, which will join gasoline-electric variants of the Tahoe and Yukon.
GM hasn't released pricing for the new models, and it didn't say how much weight was shed in the redesign.
The pickups will have the same towing capacity as the non-XFE versions, while the SUVs' limit is slightly higher because of new transmission-cooling technology, GM said.
GM's declining truck sales contributed to a US$15.5 billion loss in the second quarter, the third-biggest deficit in its 100-year history.
GM's US sales fell 18 percent through the first seven months, according to New Jersey-based Autodata Corp, which tracks industry statistics.
US gasoline jumped 28 percent in the same period. Wagoner said in June that GM temporarily suspended work on replacement versions of the largest pickups and SUVs so it could work on more fuel-efficient models.
GM cut US$1.5 billion, mostly from truck development, from capital spending as part of a plan to increase liquidity by US$15 billion through the end of 2009.
GM also is looking for ways to save on fuel in rear-wheel-drive models across its lineup, David Leone, the chief engineer for rear-wheel-drive vehicles, said in an interview last week from Birmingham, Michigan.
The auto maker is looking at ways on how to reduce friction from brakes and to shut off fuel more abruptly when a driver eases up on the accelerator, Leone said.
Mechanical and aerodynamic changes and the cut in weight will help models including Chevrolet Silverado pickups improve to 15 miles per gallon in the city and 21mpg on the highway, a 1mpg gain, GM said yesterday in a statement. They'll carry an XFE badge, for 'extra fuel economy,' and go on sale next quarter.
The moves are part of GM's response to gasoline near US$4 a gallon that chopped its United States light-truck sales by 23 percent through July. Chief Executive Officer Rick Wagoner is shifting the Detroit auto maker's emphasis to cars from trucks and adding more engineers to projects that pare existing models' fuel use.
'We fast-tracked the XFE models to get them into dealer showrooms as quickly as possible,' Gary White, GM's chief for full-size trucks, said in the statement.
The new designs for the Silverado and GMC Sierra pickups and the Chevrolet Tahoe and GMC Yukon SUVs save weight by using more aluminum parts and trim fuel consumption with tires that produce less friction on the road, GM said.
The largest US auto maker lowered the vehicles' suspensions and made body changes to cut wind resistance, according to Bloomberg News.
GM also is adding hybrid versions of the Silverado and Sierra, which will join gasoline-electric variants of the Tahoe and Yukon.
GM hasn't released pricing for the new models, and it didn't say how much weight was shed in the redesign.
The pickups will have the same towing capacity as the non-XFE versions, while the SUVs' limit is slightly higher because of new transmission-cooling technology, GM said.
GM's declining truck sales contributed to a US$15.5 billion loss in the second quarter, the third-biggest deficit in its 100-year history.
GM's US sales fell 18 percent through the first seven months, according to New Jersey-based Autodata Corp, which tracks industry statistics.
US gasoline jumped 28 percent in the same period. Wagoner said in June that GM temporarily suspended work on replacement versions of the largest pickups and SUVs so it could work on more fuel-efficient models.
GM cut US$1.5 billion, mostly from truck development, from capital spending as part of a plan to increase liquidity by US$15 billion through the end of 2009.
GM also is looking for ways to save on fuel in rear-wheel-drive models across its lineup, David Leone, the chief engineer for rear-wheel-drive vehicles, said in an interview last week from Birmingham, Michigan.
The auto maker is looking at ways on how to reduce friction from brakes and to shut off fuel more abruptly when a driver eases up on the accelerator, Leone said.
