Dealership: "We are ripping out a lot of 2017 10sp transmissions"
11-06-2017, 01:31 PM
#11
Senior Member
Originally Posted by crazygrow1
Yes- I get how the transmission works - skipping gears etc.
With sport mode, with my foot completely off the gas it will stay in the 4-5k RPM range for 10+ seconds before shifting.
With sport mode, with my foot completely off the gas it will stay in the 4-5k RPM range for 10+ seconds before shifting.
11-06-2017, 01:33 PM
#12
I KEEP posting this same nugget:
It's a jointly developed transmission with GM.....whatever problems arise, they will be dealt with swiftly. Beginning with the 2019 model year, they will be in something close to 1.2 Million trucks per year.
It's a jointly developed transmission with GM.....whatever problems arise, they will be dealt with swiftly. Beginning with the 2019 model year, they will be in something close to 1.2 Million trucks per year.
11-06-2017, 01:41 PM
#13
Like others have said in Sport mode, it's suppose to rev and be at higher rpm. aka thats why it has more getup when you step on it...
11-06-2017, 01:42 PM
#14
Senior Member
I hate when people put subjective statements in social media, like "We are ripping out a lot of 2017 10sp transmissions". How many is "a lot"? In what period of time? Versus how many are on the road? Is this any different than any other year on a BRAND NEW TRANSMISSION LAUNCH?
I never buy vehicles in the first year of anything if I can help it.
I never buy vehicles in the first year of anything if I can help it.
Last edited by Eduskator; 11-06-2017 at 01:45 PM.
11-06-2017, 01:44 PM
#15
Senior Member
From my point of view, this is also normal. Anyways, keep us posted about what the dealership will say.
11-06-2017, 02:11 PM
#17
Senior Member
The following 4 users liked this post by Ricktwuhk:
The following users liked this post:
toostroked (11-07-2017)
11-06-2017, 02:51 PM
#19
Senior Member
It's been said but for the whole story
sport mode is designed to do a number of things. If applied the way GM did it - it's also tied to things like steering wheel input, wheel speed, as well as gear, acceleration (actual from the accelerometers used in the airbag system), brake application if any.
Such as to know to hold the gear after letting off - because you are riding out a curve, if you get too slow while letting off it pre selects the next gear down. etc.
so it will drive unlike a normal automatic and will do the things a sports car driver will do if they were in a manual equipped car. So don't be surprised when it acts different in sport mode that's part of the game. It's spelled out in the manual I believe.
On the hang ups 3 and 5 - assuming they are on the same set with the same clutch pack - it is possible some were built with the clutch plates and the free plate stacked wrong. GM had this issues in some 6L80 and 90 transmissions as well as some of the 8L90. It's simply a matter of it assembled wrong - and it doesn't release the clutch between gear rings as smooth as it was supposed to - but it still works.
Honestly I wouldn't want the dealer to try to rebuild my transmission either - I'd rather they R and R the assembly as there are special tools needed to build the new trans correctly.
sport mode is designed to do a number of things. If applied the way GM did it - it's also tied to things like steering wheel input, wheel speed, as well as gear, acceleration (actual from the accelerometers used in the airbag system), brake application if any.
Such as to know to hold the gear after letting off - because you are riding out a curve, if you get too slow while letting off it pre selects the next gear down. etc.
so it will drive unlike a normal automatic and will do the things a sports car driver will do if they were in a manual equipped car. So don't be surprised when it acts different in sport mode that's part of the game. It's spelled out in the manual I believe.
On the hang ups 3 and 5 - assuming they are on the same set with the same clutch pack - it is possible some were built with the clutch plates and the free plate stacked wrong. GM had this issues in some 6L80 and 90 transmissions as well as some of the 8L90. It's simply a matter of it assembled wrong - and it doesn't release the clutch between gear rings as smooth as it was supposed to - but it still works.
Honestly I wouldn't want the dealer to try to rebuild my transmission either - I'd rather they R and R the assembly as there are special tools needed to build the new trans correctly.
11-06-2017, 02:54 PM
#20
Senior Member
