Shifting

[jdrampage]

On ‎8‎/‎14‎/‎2017 at 7:14 AM, JacobC1983 said:

Mine has about 14k miles on it. Sometimes I get in it and it will shift perfectly for the whole morning, then I get in it that afternoon to drive home and it shifts like a hunk of crap. Lurches forward on the downshift, some of the upshifts are harsh, especially the 1-2 and 2-3 shift. It almost has a Jekyll/Hyde personality.

 

Mine is a 2016 5.3L/6 speed.

I have about 65K on my 14' Sierra and I get the same thing. Sometimes is shifts as smooth as silk....other times it'll seem like it slips and take a second to catch a gear again. Very annoying sometimes

[BlackHawkZ71]

On 8/18/2017 at 9:47 AM, Donstar said:

I believe the learn mode is period of time when the driver and transmission grow to understand each others' feelings and emotions. Both driver and truck can be more irritable after a bad day at the office! ;-) My last three trucks have been remarkable at figuring out what gear to shift to and when to shift. Sometimes I've had to change my behavior to get the transmission to do what I am asking. I would far,far rather do the shifting myself as I can't expect a transmission to read my mind.

In that case mine does good to know when to shift, since i manual shift a lot but here lately since i drive on all highway with very little stops. It get put in drive. Seems to do ok. I know manual 2-3 up shift i get a slip shift feel and defuel. Drive its way less noticeable if there was a way to adapt a ford 6 speed trans to my gm i would, those manual mode are insanely great (behaves like a manual trans) the test subject was my cuz 16 f150 2.7 eco boost didn’t like a 3rd gear launch- almost like my 14 cruze transmission which i miss. Still wouldn’t get a ford just for that.

 

Its either i am not catching this rough shifting or mine is fine? 

[Materialman]

There is no doubt they need to do some work in this area. My 15 shifts pretty well most of the time, but once in awhile it seems to get "confused" for a moment and then figures it out and when it does, it doesn't shift smoothly.  Dealer says nothing can be done at this time. 

[snowman44]

Brought in truck yesterday for oil change and mentioned again how transmission is always looking for a gear.  They found nothing.  Im in the tough spot do I get a tune and take the chance of me ste=ill not being happy or gettign rid of it to get a used diesel which is allison transmission.  Do I need a diesel ...NO... Have I always wanted one ...YES... and one way to get a transmission that runs great.  Bought damn diesels hold their value.  I love my 16 midnite but transmission is killing me and for the first time in a long time considering switching brands.

[Paintor]

13 minutes ago, snowman44 said:

Brought in truck yesterday for oil change and mentioned again how transmission is always looking for a gear.  They found nothing.  Im in the tough spot do I get a tune and take the chance of me ste=ill not being happy or gettign rid of it to get a used diesel which is allison transmission.  Do I need a diesel ...NO... Have I always wanted one ...YES... and one way to get a transmission that runs great.  Bought damn diesels hold their value.  I love my 16 midnite but transmission is killing me and for the first time in a long time considering switching brands.

Yeah, kinda sucks hitting the throttle and having the truck silly downshift to too low of a gear....decide it didn't want that gear... think for a couple seconds before the computer applies throttle and finally pick a gear to get into.. .  

 

Wish I bought a Dodge Cummins with a stick shift and 250,000 miles than buy this Sierra nightmare.

[SkiDooNick700]

 If you really want to be reminded how clunky the shifting can be put a 20 pack of empty beer bottles in the back seat, they clank around every shift LOL... experienced this on Thansgiving Day.

 

Im in the process of a moving to a hillyish area and noticed my truck shifting has gotten a bit worse... wonder if its trying to figre out the new terrain.  

[James Bollier]

I know the feeling about wifey. The night we drove my 2015 Denali 6.2 8 spd off the lot wife ask me if I really paid 62,000 for a luxury truck that shifts like a hay baler, I ignored her. Back in shop 3 times replaced torque converter, seals between 1st &2nd, 3rd &4th  warranty ran out I put Super Chip in it and retuned tranny myself and it has been a pussycat ever sence then although a big pussycat when asked to perform problem solv ed!!