Tag Archives: GM

Automobile Efficiency Turns To Low Roll Resistance Tires

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Over the years automobile manufacturers have been put to the test to design vehicles that will meet rising Corporate Average Fuel Economy (CAFE) standards and consumer demand brought on by high fuel prices. In their quest they have turned to develop and test low roll resistance tires. While these tires are used most frequently on hybrid cars, low rolling resistance tires are now starting to show up on more mainstream vehicles as well. Continue reading →

Chevy Volt Software Glitch Stalls Engines

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General Motors (GM) has announced a customer satisfaction campaign affecting approximately four thousand 2013 Chevrolet Volt electric cars. A software glitch in the delayed charging function could cause the vehicle to unexpectedly stall. Drivers will still have steering and brakes, but in order to restart the engine, they must stop the vehicle, turn it off, and wait five minutes before restarting.

According to GM spokeswoman, Michelle Malcho, the glitch only affects the small number of owners that have used the delayed charging option. All drivers are recommended to switch to immediate instead of delayed time charging until the problem can be fixed. GM has already sent letters by Federal Express explaining to customers that the repair requires the vehicle’s control system software to be re-flashed. The repair is expected to take less than an hour.

Chevy Sonic Turn Signal Malfunction

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General Motors (GM) is warning customer’s of certain 2013 Chevrolet Sonic vehicles about a problem that could leave drivers unaware that their turn signals are not functioning. When a turn signal lamp fails to operate, the Body Control Module (BCM) is suppose to detect the condition and warn the driver of the problem. A programing error in the BCM system may fail to warn the driver and if the problem goes unfixed, other drivers will not know that the vehicle is turning. This could increase the risk of an accident. Owners wanting more information can contact the Chevrolet owner center at 1-866-694-6546.

GM Ford Alliance To Improve Fuel Economy

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A manufacturing alliance between General Motors (GM) and Ford, expected to be unveiled next month, will have the two rival companies developing automatic transmissions designed to improve fuel economy. The alliance could save the companies billions of dollars as they work towards meeting demanding federal fuel economy regulations set for 2017.

GM and Ford have already successfully worked together building six speed automatic front wheel drive transmissions in 2002, introduced in 2006 in approximately thirty different models. Both companies are currently developing 8, 9, and 10 speed transmissions for front and rear wheel drive cars and light trucks and they hope that the agreement will not only speed up technological developments, but will allow them to reduce manufacturing costs.

Packing more gears into the compact transmission housings used in smaller vehicles is an increasingly tricky challenge, according to engineers. Automatic transmissions with more gear ratios and more sophisticated electronic controls are crucial to improving fuel economy but the limited space of compact and subcompact cars makes it difficult. The lack of space is one reason that subcompacts like the Ford Fiesta and Chevrolet Sonic do not achieve higher fuel efficiency than the larger Ford Focus and Chevy Cruze. Longer vehicles also have lower aerodynamic drag, which helps overall efficiency.

Developing transmissions in house will not only allow GM and Ford to tailor the components to suit their needs, but will eliminate royalty costs for licenses and intellectual property rights charged by their current gearbox suppliers. The new transmissions are expected to reach the market by 2015.

GM Vehicles Could Unexpectedly Roll Away

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General Motors (GM) will be contacting owners of certain Chevrolet, Pontiac, and Saturn models equipped with four speed automatic transmissions, about a problem that could lead to the vehicles unexpectedly rolling away. According to GM, the tabs on the transmission shift cable end could fracture and separate, leaving the driver with inaccurate shift lever readings. The driver may be able to put the vehicle in park and remove the key, but the vehicle is not actually in park. The vehicle may not start and could roll away unexpectedly. GM will be notifying owners as soon as a recall schedule has been decided and dealerships will install a retainer over the cable end or replace the shift cable as necessary. Owners wanting more information on the problem can contact GM at 1-800-521-7300. The vehicles involved in the recall include:

GM Issues Service Campaign For OnStar Vehicles

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General Motors (GM) has asked dealerships to stop selling approximately sixty thousand 2012 and 2013 vehicles because of a software problem with the OnStar communication system. According to GM spokesman, Alan Adler, the problem was discovered during rear end crash testing where the airbags are not suppose to deploy. The “sensing diagnostic module,” still senses when to inflate airbags, but when the airbags are not suppose to inflate, certain models may not always receive a call from an OnStar operator to check to see if the occupants are injured. The problem does not require a recall and GM has already repaired many vehicles through a remote upgrade. Owners with vehicles that cannot be repaired remotely will be notified through a GM customer service campaign and will be asked to bring their vehicles to the nearest dealership to have the problem fixed. The vehicles involved in the service campaign include:

  • 2013 Buick Verano
  • 2013 Cadillac ATS
  • 2012 Cadillac SRX
  • 2013 Cadillac XTS
  • 2013 Chevrolet Cruze
  • 2013 Chevrolet Equinox
  • 2013 Chevrolet Volt
  • 2013 GMC Terrain