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Hesitation from engine and Hard shift when going forward

Drew Bellucci
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vic.gsxr New Member

vic.gsxr

Posted
Posted (edited)

Any fixes yet ? This exact same problem happens to me every single morning. Back up about 20ft down drive to the street put in D and push the gas the truck damn near stops when shifting and then slams into 2nd. EVERY SINGLE DAY. I live on a slight hill if I head down the hill and let it "coast" into second gear it will shift smooth, any type of throttle at all and it will break your neck shifting ... this is a 2019 Denali truck with 8speed and now has 8k miles on it and seems like its getting worse every day.

Edited by vic.gsxr
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Drew Bellucci
Drew Bellucci

Anyone else experiencing a hard shift or hesitation of the engine when you first hit the gas. For example, I start the truck, reverse out of the driveway, put the car in drive and when I hit the gas,

ShamrockShooter
ShamrockShooter

Look up bulletin #16-NA-361 harsh 1-2 shift upon first startup shift under light throttle. GM says it normal on the 8 speed. It has something to do with the initial clutch fill time of the C4 clutch.

UGADawgs
UGADawgs

I have the same cold start 1-2 shift hesitation and lunge. I do the same coast method as zzrsouth. Once in 2nd, can't stop, accelerate and reproduce. It doesn't happen again until the next morning. So

BlancoSilverado Enthusiast

BlancoSilverado

Posted
Posted (edited)
On 3/17/2019 at 6:40 PM, Drew Bellucci said:

Anyone else experiencing a hard shift or hesitation of the engine when you first hit the gas. For example, I start the truck, reverse out of the driveway, put the car in drive and when I hit the gas, the truck goes toward and then i feel the truck completely stop for a second (hesitation) and then it continues forward, I only expierence this when I’m going from reverse to forward.  I come to a complete stop and do not shift to drive when moving backwards still. ?

Same, i started a thread about this. The third time that it happen was when the truck was 100% warmed up (40 mins of driving). Is it constant when the truck warms up? 

Edited by BlancoSilverado
LT4Banger Enthusiast

LT4Banger

Posted
Posted
3 hours ago, vic.gsxr said:

Any fixes yet ? This exact same problem happens to me every single morning. Back up about 20ft down drive to the street put in D and push the gas the truck damn near stops when shifting and then slams into 2nd. EVERY SINGLE DAY. I live on a slight hill if I head down the hill and let it "coast" into second gear it will shift smooth, any type of throttle at all and it will break your neck shifting ... this is a 2019 Denali truck with 8speed and now has 8k miles on it and seems like its getting worse every day.

No fix unfortunately, took mine in to the dealer for the second time (got the new fluid the first time), and they said they couldn’t feel anything wrong with it. This thing vibrates randomly if I’m going >25mph. I just crossed 4K miles on mine. 

  • 3 weeks later...
mcmurtry1975 New Member

mcmurtry1975

Posted
Posted

I have a 2019 Chevy Colorado zr1  and  it has a rough 1-2nd shift when backing out of  my inclined driveway,  as I  back out and put it into  drive and accelerate it revs  high  and loses power  as if in neutral and then kicks into 2nd gear,  this  is  very worrisome since  it's a brand new truck,  I already want to go trade it in.  It only  does  this to me when I'm parked on an incline overnight  in  my driveway.  I  noticed that when  I  press the  tow button  it doesn't rough shift form 1st-2nd. Big problems down the road  I think  after  warranty  is up. 

Randall Hyler New Member

Randall Hyler

Posted
Posted

I am having the same issue. I have a 2019 Sierra and just starting seeing this at first start up. Like others, I back out of my driveway and when I first start moving forward in first gear, it hesitates and jerks to next gear.  My neighbor has the same model (I couldn’t resist buying one after seeing hers) and has experienced this only once.  Sounds like there’s no solution. 

  • 1 month later...
Roscoe Silk New Member

Roscoe Silk

Posted
Posted

I'm having the same issue with my 2019 Silverado. I dont want a truck that's having transmission problems already.  What can be done so that we dont end up with a vehicle that is going to cost us money after warranty runs out?

Jricharc Enthusiast

Jricharc

Posted
Posted (edited)

Mine has been doing this to me lately as well, 5.3 8speed w/2800 miles.  I am worried its gonna **** up something in the driveline.

Edited by Jricharc
econometrics Senior Enthusiast

econometrics

Posted
Posted

The last time my 2019 RST Z71 did this was around 4,000 miles. That was 3500 miles ago. 

 

I wouldn't worry about it all that much, to be honest. It will get better. 

Aweast New Member

Aweast

Posted
Posted (edited)
On 12/13/2019 at 3:27 PM, econometrics said:

It won't. 

I have a 19 AT4 that has done it since day 1.  Of course dealership couldn’t reproduce and said whatever it was is normal.  I now have 14k on the truck and it happens way more common than before.  It has to be a huge safety liability, jocking into a parking spot and you could be into the car next to you or run someone down.  Can’t be “normal”  Hate to say it but probably going back to a ford.  

Edited by Aweast
IBuildTexas New Member

IBuildTexas

Posted
Posted

Mine used to do this all the time. I had a buddy that told me it was related to the auto-start/stop. (It didn't make sense to me but I was up for trying anything at that point). I’ve been militant about turning that off every-time I start my truck (i wish you could permanently disable it) & it hasn’t been an issue for me for @10k miles.


I currently have 26k miles on the truck; so i dont know if turning the auto-start off did it or if the truck just quit doing it, but mine hasn't done it in close to 4 months.

  • Like 1
Jack Christensen Enthusiast

Jack Christensen

Posted
Posted

My 2019 Trail Boss has been doing this from the day I bought it.  I saw a post earlier that mentioned something about "engine relearning"  I have 9,500 miles now and it still does it.  When my wife is riding with me it freaks her out every time and she looks at me as if it is my fault.  I have not taken my truck in for this specific issue, but it appears it would be a waste of time anyway. I'll monitor this post to see if there has been any fixes - or another "Recall".  I have had my truck since Feb 2019 and love the truck, but seems like the little issues are adding up and causing a lot of frustration.

1. Brakes Squeak - Had Chevy dealer look at this yesterday, they said it's normal.

2. This issue - hesitation and jerk when going forward the first time

3. Ambient Air Temperature reading - has always been about 7 - 10 degrees higher than the actual temperature outside - had Chevy dealer replace the sensor, still way off.

4. Entertainment System - When I start my truck after stopping somewhere (Gas station, gym, store etc...) about 85% of the time, no music plays.  The system comes up and shows the station, however, until I touch the screen, nothing plays.  Weird & Annoying.

5.  I'm sure I am forgetting something.. ha.

 

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  • 3 weeks later...
Fermy Enthusiast

Fermy

Posted
Posted

I also have the same issue with my 19 RST Z71 4X4.. When leaving on first start up she lunges and can't find a gear.. I'm at about 6k on mine, I do not expect much from GM... they got our money already

  • 7 months later...
GSC52 New Member

GSC52

Posted
Posted

my 2019 LT Trailboss, does same thing, but I really notice after it hasn't been driven in a few days.  I work from home, so I don't go out every day.  But when I test drove the truck, it drove great... hahaha.  But now it does the 'lunging' up to about 45-50 mph.  But from the posts, looks like the dealer may not be any help.

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