07-18-2014, 09:13 AM | #1 |
General Motors Aficionado
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GM Confirms 8L90 8 Speed Automatic Transmissions for 2015 6.2L K2XX Trucks/SUVs
2015 Chevrolet and GMC Pickups, SUVs to Offer Eight-Speed Transmission
General Motors July 18, 2014 DETROIT – Chevrolet and GMC have confirmed a new eight-speed automatic transmission will be standard on 2015 Chevrolet Silverado, GMC Sierra and GMC Yukon Denali/Yukon XL Denali models equipped with the 6.2L EcoTec3 V-8. The GM-developed Hydra-Matic 8L90 eight-speed is approximately the same size and weight as the Hydra-Matic 6L80 six-speed automatic. Its 7.0 overall gear ratio spread is wider than GM’s six-speed automatic transmissions, providing a numerically higher first gear ratio to help drivers start off more confidently with a heavy load or when trailering. The 8L90 also enables numerically lower rear axle ratios, which reduce engine rpm on the highway. With 420 horsepower and 460 lb.-ft. of torque, the 6.2L EcoTec3 V-8 is the most powerful engine offered in any light-duty pickup, and offers a maximum available trailer rating of 12,000 pounds, based on SAE J2807 Recommended Practices. As with other EcoTec3 engines, it seamlessly switches to four-cylinder operation under lighter loads to improve fuel economy. Additional technical details and the EPA estimated fuel economy will be announced closer to the start of production in the fourth quarter of 2014.
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2023 GMC Canyon Elevation 2020 Chevrolet Colorado W/T Extended Cab (State-issued) Last edited by FenwickHockey65; 07-18-2014 at 03:31 PM. |
07-18-2014, 10:14 AM | #2 |
Drives: 21 Bronco Join Date: Jun 2012
Location: Carol Stream
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Wasn't GM working with Ford on a 8 Speed trans, or was that the 9 and ten speeds?
Either way thats a good move for GM. I would be shocked if Ford didnt offer a 8 speed in the F-150 in a year or two |
07-18-2014, 10:16 AM | #3 |
Iron fist, lead foot
Drives: 2003 Mustang Cobra Join Date: Jul 2013
Location: Wyoming
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Co-development of 9 and 10 speeds has been underway for a while.
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07-18-2014, 03:32 PM | #4 |
General Motors Aficionado
Drives: 2023 GMC Canyon, 2020 Colorado Join Date: Aug 2008
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Now to wait for this to trickle down to 5.3L and 4.3L models...
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2023 GMC Canyon Elevation 2020 Chevrolet Colorado W/T Extended Cab (State-issued) |
07-18-2014, 03:37 PM | #5 |
Casey Woodside
Drives: a very fun car Join Date: Jun 2010
Location: Tn
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Dose dodge have a 8 speed auto in the trucks
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07-18-2014, 03:40 PM | #6 |
Drives: 21 Bronco Join Date: Jun 2012
Location: Carol Stream
Posts: 6,023
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I believe it is optional on the Ram
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07-18-2014, 03:42 PM | #7 |
Drives: 2013 2SS/RS M6 NPP Join Date: Dec 2012
Location: North Carolina
Posts: 340
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CVT FTW.
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07-18-2014, 04:30 PM | #8 |
Pull up Cougar!
Drives: 2016 2SS Join Date: Jul 2011
Location: San Diego
Posts: 2,875
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Quick, put an 8 speed into the new Canyon!
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07-27-2014, 04:03 PM | #9 |
Drives: '10 CGM 2SS/RS 6M Join Date: Oct 2009
Location: North Central Florida
Posts: 1,032
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Not right at first they won't, it would be too much of an improvement and it would be harder for them to sell additional vehicles...they trickle down and out the tech to continue to sell vehicles
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07-27-2014, 04:50 PM | #10 |
Drives: car Join Date: Nov 2009
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