GM Confirms Eight-Speed Auto for Pickups, SUVs
07-25-2014, 12:38 PM
#1
GM Confirms Eight-Speed Auto for Pickups, SUVs
Interesting....
GM Confirms Eight-Speed Auto for Pickups, SUVs » AutoGuide.com News
GM Confirms Eight-Speed Auto for Pickups, SUVs » AutoGuide.com News
While it was spread in rumors last week, GM has confirmed that its half-ton pickup trucks and full-size SUVs will both be available with an eight-speed automatic transmission.
There is a catch though. The eight speed will only be paired with the 6.2-liter V8 that makes 420 hp and 460 lb-ft of torque, while both the 5.3-liter V8 along with the 4.3-liter V6 solider on with a six-speed automatic.
GM says that the new eight speed is roughly the same size and weight as the outgoing six speed, and allows a wider gear spread which means that more torque is available from the first gear. This also means that the rear-end axle ratio can be numerically lower, allowing RPMs to stay low at highway speeds.
SEE ALSO: GM Truck Tow Ratings Adjusted by Tougher Testing
The Silverado and Sierra were recently tested using SAE J2807 standards, and the trucks both retain their maximum tow rating of 12,000 pounds.
The new eight-speed should also help fuel economy, numbers on which will be released sometime in late 2014.
There is a catch though. The eight speed will only be paired with the 6.2-liter V8 that makes 420 hp and 460 lb-ft of torque, while both the 5.3-liter V8 along with the 4.3-liter V6 solider on with a six-speed automatic.
GM says that the new eight speed is roughly the same size and weight as the outgoing six speed, and allows a wider gear spread which means that more torque is available from the first gear. This also means that the rear-end axle ratio can be numerically lower, allowing RPMs to stay low at highway speeds.
SEE ALSO: GM Truck Tow Ratings Adjusted by Tougher Testing
The Silverado and Sierra were recently tested using SAE J2807 standards, and the trucks both retain their maximum tow rating of 12,000 pounds.
The new eight-speed should also help fuel economy, numbers on which will be released sometime in late 2014.
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07-25-2014, 11:49 PM
#8
TECH Apprentice
this sounds a lot like how they rolled out the 6 speeds, only offering them in the high end trims with the top dog engine first and then eventually making it the standard transmission. its a marketing gimmick as I see it.
07-26-2014, 10:58 AM
#9
Trailering – 2015 Silverado 1500 Regular Cab (SAE J2807)
2WD:
Regular Cab, 6' 6" box
6,100 lbs. / 2,767 kg. – 4.3L (3.23 axle)
7,000 lbs. / 3,175 kg. – 5.3L (3.08 axle)
9,000 lbs. / 4,082 kg. – 5.3L (3.42 axle)
Regular Cab, 8' box
5,900 lbs. / 2,676 kg. – 4.3L (3.23 axle)
6,800 lbs. / 3,084 kg. – 5.3L (3.08 axle)
9,800 lbs. / 4,445 kg. – 5.3L (3.42 axle)
4WD:
Regular Cab, 6' 6" box
7,600 lbs. / 3,447 kg. – 4.3L (3.42 axle)
6,700 lbs. / 3,039 kg. – 5.3L (3.08 axle)
8,700 lbs. / 3,946 kg. – 5.3L (3.42 axle)
Regular Cab, 8' box
7,400 lbs. / 3,357 kg. – 4.3L (3.42 axle)
6,500 lbs. / 2,948 kg. – 5.3L (3.08 axle)
9,500 lbs. / 4,309 kg. – 5.3L (3.42 axle)
Trailering – 2015 Silverado 1500 Double Cab (SAE J2807)
2WD:
Double Cab, 6' 6" box
5,600 lbs. / 2,540 kg. – 4.3L (3.42 axle)
6,500 lbs. / 2,948 kg. – 5.3L (3.08 axle)
9,500 lbs. / 4,309 kg. – 5.3L (3.42 axle)
9,500 lbs. / 4,309 kg. – 6.2L (3.23 axle)
Double Cab, 6' 6" box w/ Max Trailering Package
11,200 lbs. / 5,080 kg. – 5.3L (3.73 axle)
12,000 lbs. / 5,443 kg. – 6.2L (3.42 axle)
4WD:
Double Cab, 6' 6" box
7,200 lbs. / 3,266 kg. – 4.3L (3.42 axle)
6,200 lbs. / 2,994 kg. – 5.3L (3.08 axle)
9,200 lbs. / 4,173 kg. – 5.3L (3.42 axle)
9,200 lbs. / 4,173 kg. – 6.2L (3.23 axle)
Double Cab, 6' 6" box w/ Max Trailering Package
11,000 lbs. / 4,990 kg. – 5.3L (3.73 axle)
11,900 lbs. / 5,398 kg. – 6.2L (3.42 axle)
Trailering – 2015 Silverado 1500 Crew Cab (SAE J2807)
2WD:
Crew Cab, 5' 8" box
5,600 lbs. / 2,540 kg. – 4.3L (3.23 axle)
6,400 lbs. / 2,903 kg. – 5.3L (3.08 axle)
9,400 lbs. / 4,264 kg. – 5.3L (3.42 axle)
9,400 lbs. / 4,264 kg. – 6.2L (3.23 axle)
Crew Cab, 5' 8" box w/ Max Trailering Package
11,100 lbs. / 5,035 kg. – 5.3L (3.73 axle)
12,000 lbs. / 5,443 kg. – 6.2L (3.42 axle)
Crew Cab, 6' 6" box
5,500 lbs. / 2,495 kg. – 4.3L (3.23 axle)
6,400 lbs. / 2,903 kg. – 5.3L (3.08 axle)
9,400 lbs. / 4,264 kg. – 5.3L (3.42 axle)
9,300 lbs. / 4,218 kg. – 6.2L (3.23 axle)
Crew Cab, 6' 6" box w/ Max Trailering Package
11,000 lbs. / 4,990 kg. – 5.3L (3.73 axle)
11,900 lbs. / 5,398 kg. – 6.2L (3.42 axle)
4WD:
Crew Cab, 5' 8" box
7,100 lbs. / 3,221 kg. – 4.3L (3.42 axle)
6,200 lbs. / 2,812 kg. – 5.3L (3.08 axle)
9,200 lbs. / 4,173 kg. – 5.3L (3.42 axle)
9,200 lbs. / 4,173 kg. – 6.2L (3.23 axle)
Crew Cab, 5' 8" box w/ Max Trailering Package
10,900 lbs. / 4,944 kg. – 5.3L (3.73 axle)
11,800 lbs. / 5,352 kg. – 6.2L (3.42 axle)
Crew Cab, 6' 6" box
7,000 lbs. / 3,175 kg. – 4.3L (3.42 axle)
6,100 lbs. / 2,767 kg. – 5.3L (3.08 axle)
9,100 lbs. / 4,128 kg. – 5.3L (3.42 axle)
9,100 lbs. / 4,128 kg. – 6.2L (3.23 axle)
Crew Cab, 6' 6" box w/ Max Trailering Package
10,800 lbs. / 5,352 kg. – 5.3L (3.73 axle)
11,700 lbs. / 5,307 kg. – 6.2L (3.42 axle)
2WD:
Regular Cab, 6' 6" box
6,100 lbs. / 2,767 kg. – 4.3L (3.23 axle)
7,000 lbs. / 3,175 kg. – 5.3L (3.08 axle)
9,000 lbs. / 4,082 kg. – 5.3L (3.42 axle)
Regular Cab, 8' box
5,900 lbs. / 2,676 kg. – 4.3L (3.23 axle)
6,800 lbs. / 3,084 kg. – 5.3L (3.08 axle)
9,800 lbs. / 4,445 kg. – 5.3L (3.42 axle)
4WD:
Regular Cab, 6' 6" box
7,600 lbs. / 3,447 kg. – 4.3L (3.42 axle)
6,700 lbs. / 3,039 kg. – 5.3L (3.08 axle)
8,700 lbs. / 3,946 kg. – 5.3L (3.42 axle)
Regular Cab, 8' box
7,400 lbs. / 3,357 kg. – 4.3L (3.42 axle)
6,500 lbs. / 2,948 kg. – 5.3L (3.08 axle)
9,500 lbs. / 4,309 kg. – 5.3L (3.42 axle)
Trailering – 2015 Silverado 1500 Double Cab (SAE J2807)
2WD:
Double Cab, 6' 6" box
5,600 lbs. / 2,540 kg. – 4.3L (3.42 axle)
6,500 lbs. / 2,948 kg. – 5.3L (3.08 axle)
9,500 lbs. / 4,309 kg. – 5.3L (3.42 axle)
9,500 lbs. / 4,309 kg. – 6.2L (3.23 axle)
Double Cab, 6' 6" box w/ Max Trailering Package
11,200 lbs. / 5,080 kg. – 5.3L (3.73 axle)
12,000 lbs. / 5,443 kg. – 6.2L (3.42 axle)
4WD:
Double Cab, 6' 6" box
7,200 lbs. / 3,266 kg. – 4.3L (3.42 axle)
6,200 lbs. / 2,994 kg. – 5.3L (3.08 axle)
9,200 lbs. / 4,173 kg. – 5.3L (3.42 axle)
9,200 lbs. / 4,173 kg. – 6.2L (3.23 axle)
Double Cab, 6' 6" box w/ Max Trailering Package
11,000 lbs. / 4,990 kg. – 5.3L (3.73 axle)
11,900 lbs. / 5,398 kg. – 6.2L (3.42 axle)
Trailering – 2015 Silverado 1500 Crew Cab (SAE J2807)
2WD:
Crew Cab, 5' 8" box
5,600 lbs. / 2,540 kg. – 4.3L (3.23 axle)
6,400 lbs. / 2,903 kg. – 5.3L (3.08 axle)
9,400 lbs. / 4,264 kg. – 5.3L (3.42 axle)
9,400 lbs. / 4,264 kg. – 6.2L (3.23 axle)
Crew Cab, 5' 8" box w/ Max Trailering Package
11,100 lbs. / 5,035 kg. – 5.3L (3.73 axle)
12,000 lbs. / 5,443 kg. – 6.2L (3.42 axle)
Crew Cab, 6' 6" box
5,500 lbs. / 2,495 kg. – 4.3L (3.23 axle)
6,400 lbs. / 2,903 kg. – 5.3L (3.08 axle)
9,400 lbs. / 4,264 kg. – 5.3L (3.42 axle)
9,300 lbs. / 4,218 kg. – 6.2L (3.23 axle)
Crew Cab, 6' 6" box w/ Max Trailering Package
11,000 lbs. / 4,990 kg. – 5.3L (3.73 axle)
11,900 lbs. / 5,398 kg. – 6.2L (3.42 axle)
4WD:
Crew Cab, 5' 8" box
7,100 lbs. / 3,221 kg. – 4.3L (3.42 axle)
6,200 lbs. / 2,812 kg. – 5.3L (3.08 axle)
9,200 lbs. / 4,173 kg. – 5.3L (3.42 axle)
9,200 lbs. / 4,173 kg. – 6.2L (3.23 axle)
Crew Cab, 5' 8" box w/ Max Trailering Package
10,900 lbs. / 4,944 kg. – 5.3L (3.73 axle)
11,800 lbs. / 5,352 kg. – 6.2L (3.42 axle)
Crew Cab, 6' 6" box
7,000 lbs. / 3,175 kg. – 4.3L (3.42 axle)
6,100 lbs. / 2,767 kg. – 5.3L (3.08 axle)
9,100 lbs. / 4,128 kg. – 5.3L (3.42 axle)
9,100 lbs. / 4,128 kg. – 6.2L (3.23 axle)
Crew Cab, 6' 6" box w/ Max Trailering Package
10,800 lbs. / 5,352 kg. – 5.3L (3.73 axle)
11,700 lbs. / 5,307 kg. – 6.2L (3.42 axle)
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