Jump to content

2019 silverado high country, early morning transmission jerky

2019 silverado high countr
 Share

Recommended Posts

2019 silverado high countr New Member

2019 silverado high countr

Posted
Posted

 first thing in the mornings when I back out of driveway and put in drive the transmission seems to slip or jerks. it does this once every couple of days but only the first time I drive it for that day.  the dealer said it was the computer getting used to my driving habits, sounds bogus to me. thoughts?

BigdaddyoCan Enthusiast

BigdaddyoCan

Posted
Posted

ya sounds bogus tp me too. I get the hard shifty at low speed sometimes when first starting down road from my driveway. Is thatwhat you mean? I have a 2021 LT

bwheel1964 New Member

bwheel1964

Posted
Posted

i get it too.  can happen anytime I stop and start again with a little roll backward.  try backing out on a hill, it'll snap your neck.  Dealer says its normal. 

 

  • 1 month later...
Phantom 4D Enthusiast

Phantom 4D

Posted
Posted

My 2019 Sierra does it. Just had it in for service yesterday. Dealer changed transmission fluid, which I was told was done on all 2019 and up trucks from the factory. I have had the hard downshift coming to a stop. The hard "chatter" shift some mornings. On the way home, 1.5 hour drive, the mild vibration seems to be gone. But the hard downshift is still there. According to the service advisor, it's due to the design of the transmission. If that's true, why change the fluid????

Jricharc Enthusiast

Jricharc

Posted
Posted

Had the same issue with my 19' 8 speed. It only does it after backing out of a driveway and slams into 1st if you don't wait. Dealer changed the fluid to Mobil 1 and "retuned the shift points" but it does the same thing so never bothered to take it back to them.

Gangly Senior Enthusiast

Gangly

Posted
Posted

 

Involved Region or Country

North America, Europe

Condition

Some customers may comment on a condition of delayed engagement when the transmission is shifted from Park to Reverse or Park to Drive after the vehicle has been sitting with the engine off.

Note: This condition may typically occur after several hours or more commonly overnight.

Customers may describe this condition as:

  • Vehicle delaying into gear
  • Feeling like the transmission is slipping
  • Delayed engagement followed by a harsh engagement

Information

General Motors allows 3 seconds for the transmission to complete a garage shift, shifting from Park to Reverse or Park to Drive. If the engine speed is increased before the transmission has engaged, the garage shift may be harsh.

Operation will be normal for the subsequent engagements throughout the day and the condition will not occur until the vehicle sits again with the engine off for several hours or overnight.

  • Like 1
M1ck3y Senior Enthusiast

M1ck3y

Posted
Posted (edited)

Are you guys new to gm vehicles? You know this is just history repeating itself right? 

Edited by M1ck3y
milkmaster Enthusiast

milkmaster

Posted
Posted

YEP! MY 2021 Sierra 4k miles does it!  It started with the colder weather.  I normally back about 100 feet out of my driveway into the street.  It's a downhill slope so no throttle needed.  Then I shift to drive and pull away.  The truck initially shifts to drive and will lurch a bit first.  Then it is like it hits neutral for a split second and then engages again.  All is good after that for the rest of the day. 

 

I did try to start the truck a little earlier before leaving to see if just warming it up would help.  That didn't make any difference.  Other than that one thing that just started, no problems at all with my new Sierra.  Now that I read of others doing I may not worry as much.  Seems to be common among these trucks.

Skeeterhawk Enthusiast

Skeeterhawk

Posted
Posted
2 hours ago, M1ck3y said:

Are you guys new to gm vehicles? You know this is just history repeating itself right? 

Don't get me started on the continuing problems gm is having with their powertrains. Some will not have problems early in their lifespan and some will fail everytime you turn around. Good luck guys not getting a lemon.

  • Like 1
M1ck3y Senior Enthusiast

M1ck3y

Posted
Posted (edited)

Every cold start I put it in manual and when its at or over the shift point for 2nd, I put it in drive. Barely feel the shift, and it sets the tone for how it performs the rest of the drive (great). Unless I drive aggressive and then tone it down and drive normally. It doesn't like that.

 

I've noticed that If I let it slam and flap around for its first shift after a cold start its going to drive like crap and shift poorly from there on out. Engaging the shift AFTER the fluid has had a chance to circulate properly seems to make a difference for me. But this is on an 8spd. 

 

I believe that because the poor shift didn't occur, it doesn't screw up the transmissions learning. Which is why it performs great after that.

 

*edit*

 

I should note, I do drive slowly (12-15kmph) down a stretch of alley way and the road a bit in 1st before putting it into drive. Mostly because of the shift, but also to try and keep the noise of my truck down best I can. 

Edited by M1ck3y

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • Atlas
      Gas Prices

      By Atlas · Posted

      87 down as low as $5.14 here... winning!
    • Atlas
      Wow I'm in a pickle. (Broke down truck) and a story.

      By Atlas · Posted

      Progress... sort of.   Intake is disassembled, spider is out, fuel lines removed. Used a torch on the stripped screw with the lower intake off, much easier when I've got the intake sitting on my workbench, I made it talk. Walked right out with a pair of vice grips once it was nice and toasty hot.   New parts are piling up on my service cart waiting to be installed. Distributor, temperature sensor, new gaskets, fuel line kit, themostat, water neck.   My new pickle is I don't want to spend $600 on a replacement spider. I'm not sure IT is bad. I'm probably splitting hairs. Or it's $300 to send mine away and another 3 weeks of the truck just sitting. I have half a mind to assemble everything with the old spider to see if I can get away with just replacing the fuel pressure regulator to be safe. The obvious issue was the gushing high pressure fuel line which will be replaced. Getting to the spider really isn't that hard, and now I know what I'm doing , swapping it would be a breeze should it absolutely need one. Stupid, or smart?   The part that gives me pause is replacing the distributor. Well, it's already out. And I didn't mark it, whoopsie! Engine was at TDC when I removed it, I know that, so upon correct reinstall the metal tip on the rotor should point to the TDC mark on the distributor because that's where it was pointing on the old distributor. Worst case I'm a tooth off and have to re-stab it.   But then, what? I assume the truck will start. It doesn't appear the timing can be set. Here's the problem: These distributors can't be rotated but a degree or two, by design. What I read is Cam ****** needs to be -2 to +2 degrees, ideally at 0 (and checked/set above 1000 rpm). There should be enough wiggle to get that properly set, but checking the reported value is another potential issue. My Actron 9185 scanner says it supports enhanced GM PIDs and Cam ****** is one of them but it's unclear that I'll be able to correctly see it over OBD 1.5. I can see why people end up junking these things with life left in them. They're an absolute nightmare with tweener-year diagnostics/electronics and unobtanium parts.   Fingers crossed it starts and idles nicely. There can be hope, right? I'ma buy a lottery ticket the same day just in case.   Next steps..DO IT. I have not installed an intake before so I've been reading and watching a lot. Some say NO RTV except on china walls, some say DO RTV on water ports but not fuel/air intake. 1/4 or 3/8 bead on China walls? I think my strategy will be, obviously, RTV china walls with overlap on the gasket corners. Chapstick-style RTV the water ports. Leave intake ports dry. The only set of intake gaskets I could find locally are Edelbrock performance gaskets (uh...for an asthmatic 190hp V6? LOL) so we'll see how they do.   #NoToolLeftBehind. It took an hour, but my recovery mission for my deep 10mm socket was successful. It had rolled down the bellhousing and wedged itself between what I think are the fuel lines? I couldn't see it at all, but with a junk antenna I had laying around, I blindly went poking/sweeping for it, heard it clink, raised the truck, and caught a sliver glimpse of chrome with a flashlight way up there in Narnia. I had pushed it farther along the lines holding it captive, but within access of severely improvised tools, poking and cursing at it to finally knock it free to where I could get a fingertip on it to bring it home.    Not much to see.      
    • RyanbabZ71
      Gas Prices

      By RyanbabZ71 · Posted

      Thats crazy considering im right next door (Indiana)
    • Black02Silverado
      New Retail & Commercial Promo

      By Black02Silverado · Posted

      For a limited time, retail and commercial accounts receive an AMSOIL Vinyl Tool Tray with their order of $500 or more when they use code TRAY726 at checkout. The promotion runs through July 21, 2026.   Order at https://syntheticadvantage.com   Want to use AMSOIL in your business or sell at your store, apply here.  https://www.amsoil.com/business-opportunities/?zo=521390  
    • KARNUT
      2027 GMC Sierra: Official Discussion

      By KARNUT · Posted

      It wouldn’t have happened if the government hadn’t mandated outrageous fuel mileage standards. It does very little for the consumer. It adds cost. Back during Covid there was a chip shortage. They gave a rebate for your truck if it didn’t have the chip to turn on cylinder deactivation. It was 50$ because at best you may see 1/2 a mile increase per gallon. Splitting hairs each fuel mileage trick wasn’t mandated. The government doesn’t do the engineering work and say use this until it’s already in use and they like it. The fuel mileage was mandated. And those add ons the results. There’s a mandate and they are the results.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...