khester84 Posted February 28, 2018 Share Posted February 28, 2018 Do you guys know if the 2016 Sierra all terrain models come standard with the 8L90 tranmission? I built a 2018 on the gmc website and it defaulted to the 8 speed trans, just wondering if the 16s and 17s were the same. Thanks! Quote Link to comment Share on other sites More sharing options...
HvyChevy Posted March 1, 2018 Share Posted March 1, 2018 My 2017 all terrain came with 8 speed standardSent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
SFREW62 Posted March 21, 2018 Share Posted March 21, 2018 My 2017 All Terrain also came standard with the 8 speed.................. Quote Link to comment Share on other sites More sharing options...
Tdotsfinest Posted March 21, 2018 Share Posted March 21, 2018 (edited) I could be wrong but I think it depends on which model the all terrain package is put on. I have a 2016 All Terrain SLE and it came with a 6 speed, the SLT models came with the 8 speed. Not sure if that changed for ‘17 or ‘18 though Edited March 21, 2018 by Tdotsfinest Quote Link to comment Share on other sites More sharing options...
Mike GMC Posted March 21, 2018 Share Posted March 21, 2018 My 15 SLT All Terrain 5.3 has the 6 speed. Might be too old to be comparable. Quote Link to comment Share on other sites More sharing options...
Ironman24 Posted March 22, 2018 Share Posted March 22, 2018 (edited) I have a 2016 All Terrain SLT 5.3 and 6 Speed. Edited March 22, 2018 by Ironman24 Quote Link to comment Share on other sites More sharing options...
Crstfr Posted March 22, 2018 Share Posted March 22, 2018 2016 AT with 8speed here Quote Link to comment Share on other sites More sharing options...
martinto Posted March 23, 2018 Share Posted March 23, 2018 2016 SLT Texas Edition with Max Tow Pkg...6.2 & 8 speed Quote Link to comment Share on other sites More sharing options...
Mike GMC Posted March 23, 2018 Share Posted March 23, 2018 Isn't the 6 speed for the 5.3 and the 8 speed for the 6.2? Quote Link to comment Share on other sites More sharing options...
'17 Sierra Posted March 23, 2018 Share Posted March 23, 2018 35 minutes ago, Mike GMC said: Isn't the 6 speed for the 5.3 and the 8 speed for the 6.2? Nope. Earlier years had the 8 speed only with 6.2 but that was right when the 8 speed came out. Now, the SLT comes standard with the 8L90 5.3 and 6.2. Quote Link to comment Share on other sites More sharing options...
426ted Posted March 23, 2018 Share Posted March 23, 2018 Wasn't the 8 speed only available at first with the 6.2 in 2016? I seem to remember that when I would build & Price, the 5.3 came with the 6 speed. The 5.3/8 speed could have been a mid year introduction. Quote Link to comment Share on other sites More sharing options...
michigan2500hd Posted March 23, 2018 Share Posted March 23, 2018 Nope. Earlier years had the 8 speed only with 6.2 but that was right when the 8 speed came out. Now, the SLT comes standard with the 8L90 5.3 and 6.2.I've never heard of this. I was under the impression the 8 speed is standard with the 6.2 from 2015-2018. The 5.3 only gets the 8 speed when it's combined with the NHT ( or Max Tow) package. Then the 6.2 gets a 3.42 gear and the 5.3 gets a 3.73. Sent from my SM-N950U using Tapatalk Quote Link to comment Share on other sites More sharing options...
'17 Sierra Posted March 23, 2018 Share Posted March 23, 2018 (edited) I’ve got a ‘17 5.3 SLT without Max Tow that came standard with the 8 speed. It’s got the Premium Plus option too but I don’t think that’s what included the 8L90. Edited March 23, 2018 by '17 Sierra Quote Link to comment Share on other sites More sharing options...
CK1000 Posted April 1, 2018 Share Posted April 1, 2018 5.3 and 8 speed only comes with certain SLT configurations. Premium plus package has it for sure. When I did my build online there were plenty of 5.3 SLTs with the 6 speed. Quote Link to comment Share on other sites More sharing options...
jameshb Posted June 7, 2019 Share Posted June 7, 2019 On 3/22/2018 at 7:19 AM, Ironman24 said: I have a 2016 All Terrain SLT 5.3 and 6 Speed. Are you sure you have a 6-speed? I am fairly certain that the all terrain package requires 8-speed trans. I really want all terrain with 6-speed but I don’t think it exists for 2016+newer. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.