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odd issue with my 6.0 on deceleration

Lpfm1990

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Lpfm1990 Enthusiast

Lpfm1990

Posted
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ive had this happen a few times, seems to happen the most after going down my street which is a 30 zone, so usually I go 25 being its a dead end and 2am when I come home from work, when I get to my house, I usually bump it into neutral to coast down as im pulling off to back into my driveway, when I drop it into neutral the revs kick up to 1100-1200 for about 5 seconds, then finally comes down to 550-600rpm at idle... it doesn't do this all the time, and my foot isn't on the gas..... it might do it once a week, or every night that week, then I put it in reverse, back into my driveway, and it goes right back down to idle perfectly. am I the only one, should I stay something at my local dealer, or is this normal?????

GMCustomerService Senior Enthusiast

GMCustomerService

Posted
Posted

Hello Lpfm1990,

 

I understand that you are experiencing an odd issue with your vehicle. I also understand that you are seeking advice from your fellow forum members. I might not be able to provided you with any advice but if you find that you are unable to come up with a solution to your odd issue, I am more than happy to reach out to your local dealership on your behalf. Please private message me if I can be of any assistance.

 

Jennifer T.

GM Customer Care

Lpfm1990 Enthusiast

Lpfm1990

Posted
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I'm trying to get a vid on my phone of it doing it. Last night it didn't do it. It's only once now and then. Sometimes once a week. Or 3 times a week

 

 

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Lpfm1990 Enthusiast

Lpfm1990

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Finally got a sorta decent video of it doing it (damn it hard to record it with my iPhone while driving a 3500 on some lovely New York State roads). Now if I can get my YouTube to work. I'll upload it there and put the link on here. I got a vid of it hanging at about 1000 rpm or so. And a vid of what it normal does when I kick it into neutral and how the motor comes down to idle. My foot isn't on the gas at all. It's on the brake (I only drive with one foot. Unless I'm on a forklift at work then it's two foot driving)

 

 

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Lpfm1990 Enthusiast

Lpfm1990

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theres a vid, I can tell when it is doing it, being when im slowing down, I have to be abit harder on the brakes to stop, so, let me know what you guys think, its a two clip vid, 1st one with numb playing in the background is the throttle hanging, and the 2nd part with somewhere I belong is the motor pretty much idling back normally

Lpfm1990 Enthusiast

Lpfm1990

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Yeah. But if you watch at about 5-6mph I put it into neutral and the rpms go up to 1000-1050 and hang there for a few seconds then fall back to the 550-600 idle

 

 

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Lpfm1990 Enthusiast

Lpfm1990

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Actually It was at about 10mph at the first slowing down clip. But. I guess the vid doesn't do it justice till you see it in person and finally get it to happen. Usually when I'm coming home from work and ready to pass out

 

 

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02suburbanZ71 Senior Enthusiast

02suburbanZ71

Posted
Posted

It looks like your RPMs are staying up as the transmission is down shifting during the deceleration. I could be wrong.

X2. Its acting almost as if its in tow haul

scooby5121 Enthusiast

scooby5121

Posted
Posted

Normal, do not put it into neutral. The Rpm will normal always climb for a second when you do that. If it doesn't , one day it will stall.

Lpfm1990 Enthusiast

Lpfm1990

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I see it climb for the second. But now and then it hangs for a few seconds. And can I ask why to not do that? I only normally do that when I'm coming up to my driveway when I'm going to back in. I just did it on that video when I was driving around to see if I could catch if doing it. I have done that on every car I've drove (09 Saturn vue, 11 corolla, 12 Tacoma, and 13 tundra) I Deff don't do the still rolling forwards and drop it into reverse or rolling in reverse and drop it into drive

 

 

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