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Started By
Message
Silverado/Sierra downshift/engine braking?
Posted on 5/16/16 at 9:55 am
Posted on 5/16/16 at 9:55 am
I know squat about vehicles, so I will probably mess this all up terminology wise, but here goes.
Brand new Sierra. 6 speed auto. When I am traveling at low speeds and then let off the accelerator, instead of a smooth coast, I get a jerking set of downshifting and what feels like engine braking? Almost feels the way a standard would if you just coasted into a stop in gear. This is not the hill assist or whatever, and it happens no matter what I do. Even in M. I can see the tach needle do some jumping right at 1,100 rpm. I do not like this one bit. My 07 Silverado coasted just fine. Is this normal for those?
Brand new Sierra. 6 speed auto. When I am traveling at low speeds and then let off the accelerator, instead of a smooth coast, I get a jerking set of downshifting and what feels like engine braking? Almost feels the way a standard would if you just coasted into a stop in gear. This is not the hill assist or whatever, and it happens no matter what I do. Even in M. I can see the tach needle do some jumping right at 1,100 rpm. I do not like this one bit. My 07 Silverado coasted just fine. Is this normal for those?
12
Posted on 5/16/16 at 9:58 am to AlxTgr
Tow/haul on?
Posted on 5/16/16 at 9:59 am to DownSouthDave
I've tried bot on and off as well as holding the button in for 3 seconds to turn off grade braking. Still does it.
Posted on 5/16/16 at 10:00 am to AlxTgr
Is it too late to trade it in on a Tundra?
Posted on 5/16/16 at 10:01 am to DownSouthDave
Posted on 5/16/16 at 10:02 am to AlxTgr
quote:
Brand new Sierra.
bring it to dealership....
Posted on 5/16/16 at 10:06 am to Chad504boy
quote:
bring it to dealership
That's the only answer. Did it do this on your test drive?
Posted on 5/16/16 at 10:07 am to Chad504boy
quote:If it's a normal thing, I'd like to know.
bring it to dealership....
Posted on 5/16/16 at 10:10 am to AlxTgr
Add truck nuts, problem solved 
Posted on 5/16/16 at 10:11 am to AlxTgr
quote:
If it's a normal thing, I'd like to know.
while the dealership tries to tell you its normal, hop in another new one for test drive.
Posted on 5/16/16 at 10:12 am to AlxTgr
I just got a 16 Silverado and traded in an 08.
I have noticed my old truck seemed to shift a little smoother. But I haven't noticed any "jumping" when slowing down.
Edited to fix typo.
I have noticed my old truck seemed to shift a little smoother. But I haven't noticed any "jumping" when slowing down.
Edited to fix typo.
This post was edited on 5/16/16 at 11:11 am
Posted on 5/16/16 at 10:20 am to REB BEER
quote:Haven't? The jumping I mentioned was the tach needle. The sensation felt is that of a standard left in gear. Faster decel.
But I have noticed any "jumping" when slowing down.
Posted on 5/16/16 at 10:22 am to AlxTgr
If it was a Dodge I'd say the bad shifting is normal. Modern vehicles are more aggressive in upshifting and downshifting for fuel economy though.
Posted on 5/16/16 at 10:26 am to AlxTgr
My Sierra revs the motor, rpm goes up past 4k while I'm braking with the tow/haul on.
Can't use cruise and tow at the same time as it does it everytime I hit the brake.
Brought it in when it was a month old and left it a week and they said it was normal.
Can't use cruise and tow at the same time as it does it everytime I hit the brake.
Brought it in when it was a month old and left it a week and they said it was normal.
Posted on 5/16/16 at 10:33 am to AlxTgr
Go take a video of the problem and post it
Posted on 5/16/16 at 10:34 am to wickowick
quote:The tach? Not sure it's going to show much. I'll let you drive it next time you're up here.
Go take a video of the problem and post it
Posted on 5/16/16 at 10:35 am to AlxTgr
quote:Welcome to the new GM line of trucks. The dealer will tell you this is normal operation yada yada blah blah blah...
Is this normal for those?
Mine does this also along with a myriad of other shifting issues that is "normal" for this series.
Posted on 5/16/16 at 10:36 am to 4WHLN
Well, damn.
Posted on 5/16/16 at 10:39 am to DownSouthDave
quote:
Is it too late to trade it in on a Ford?
FIFY.
Posted on 5/16/16 at 10:41 am to AlxTgr
just wait till it does it in stop and go traffic and that tach jumps up and you have to stand on the brake peddle.
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