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My cold start knock/tick issues continues "no repair available"

ct_corey
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Rail Boss
Rail Boss

Well I changed my mind. Had it towed to the dealer so I could demonstrate the noise (cold start).  I asked the service advisor if a tech would come out and listen for the noise with me present to avoi

ct_corey
ct_corey

I wasnt assuming everyone has it. Relax. Just supprised no else has had this noise based on that gm says they are aware of this issue. 

BIGDOGx
BIGDOGx

My 2014 is like a concert of a box of rocks lol, i can't stand the sound these di engines make, seriously annoying.

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Kylebr1 Enthusiast

Kylebr1

Posted
Posted

I thought i heard somewhere that there were multiple complaints from noises like this on cold start and it was the vacuum pump . 

ct_corey Enthusiast

ct_corey

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1 hour ago, Kylebr1 said:

I thought i heard somewhere that there were multiple complaints from noises like this on cold start and it was the vacuum pump . 

I did too but these new 19s dont have them.

Kylebr1 Enthusiast

Kylebr1

Posted
Posted
35 minutes ago, ct_corey said:

I did too but these new 19s dont have them.

Does it have a electric unit like the vettes then ? 

ct_corey Enthusiast

ct_corey

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27 minutes ago, Kylebr1 said:

Does it have a electric unit like the vettes then ? 

Not sure if it's like the vettes but yes its electric. My brake pedal feels different everytime they update it. 

  • 2 weeks later...
Melks Enthusiast

Melks

Posted
Posted

My 2015 5.3L slowly started making a similar ticking sound. You could hear it immediately on start up and then it would slowly go away once the vehicle warmed up (10-15 mins). Took it into the dealership and they told me lifters and cam need replacing. Its currently under warranty for another 16 months thankfully. I am worried about what the future has in store for this motor. Getting a tune with AFM delete seems to be a beneficial option moving forward. I have to do more research... Only 69,000km and I am experiencing this. I drive my truck nice and easy like an old man too! 

ct_corey Enthusiast

ct_corey

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2 hours ago, Melks said:

My 2015 5.3L slowly started making a similar ticking sound. You could hear it immediately on start up and then it would slowly go away once the vehicle warmed up (10-15 mins). Took it into the dealership and they told me lifters and cam need replacing. Its currently under warranty for another 16 months thankfully. I am worried about what the future has in store for this motor. Getting a tune with AFM delete seems to be a beneficial option moving forward. I have to do more research... Only 69,000km and I am experiencing this. I drive my truck nice and easy like an old man too! 

did you listen to the whole video?. My truck sounds fine the first 20ish seconds of startup. This noise starts after the RPMS drop to normal idle. I bought the truck with 150 miles on it and its been doing it since. 

  • 1 month later...
Rail Boss Enthusiast

Rail Boss

Posted
Posted

2019 Custom Trail Boss 5.3 AFM  3125mi 99hrs. Same problem here, knock on cold start after high idle goes down to normal idle rpm. Not wasting time taking to dealer until there is a fix or it blows up. Very very disappointing.

I'm new to the forum here is a link to a video on google drive. https://drive.google.com/file/d/1-F78kbKOloomcOzkAYiSG5A98tQiijCP/view?usp=sharing

ct_corey Enthusiast

ct_corey

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10 hours ago, Rail Boss said:

2019 Custom Trail Boss 5.3 AFM  3125mi 99hrs. Same problem here, knock on cold start after high idle goes down to normal idle rpm. Not wasting time taking to dealer until there is a fix or it blows up. Very very disappointing.

I'm new to the forum here is a link to a video on google drive. https://drive.google.com/file/d/1-F78kbKOloomcOzkAYiSG5A98tQiijCP/view?usp=sharing

Sounds identical to mine. Just like mine, the noise will fade for a while after an oil change. 

 

Are you just going to ride it out until there is a fix? I don't have much faith considering the bulletin has been out for almost a year. I don't think they plan on fixing it anytime soon. 

BIGDOGx Senior Enthusiast

BIGDOGx

Posted
Posted
2 hours ago, ct_corey said:

Sounds identical to mine. Just like mine, the noise will fade for a while after an oil change. 

 

Are you just going to ride it out until there is a fix? I don't have much faith considering the bulletin has been out for almost a year. I don't think they plan on fixing it anytime soon. 

These engines both the 6.2 and 5.3 sound like a box of rocks at idle imo, nothing new my 14 6.2 does the same thing. Personally i really don't want to allow a gm tech at a dealer to crack open my engine unless it is no doubt gone or in trouble! I will say while driving though she revs fine and sounds great in the upper rpm range. 

ct_corey Enthusiast

ct_corey

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12 minutes ago, BIGDOGx said:

These engines both the 6.2 and 5.3 sound like a box of rocks at idle imo, nothing new my 14 6.2 does the same thing. Personally i really don't want to allow a gm tech at a dealer to crack open my engine unless it is no doubt gone or in trouble! I will say while driving though she revs fine and sounds great in the upper rpm range. 

Did you watch our videos? The loud rapping noise is what we are talking about. 

BIGDOGx Senior Enthusiast

BIGDOGx

Posted
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5 minutes ago, ct_corey said:

Did you watch our videos? The loud rapping noise is what we are talking about. 

Yes the random tapping noise is what you are talking about right?

 

My 14 6.2 has the same random occasional tap noise at idle.

KARNUT Senior Enthusiast

KARNUT

Posted
Posted

Not to discount your concern. I’ve owned lots of small blocks. GMs seemed to be noisy. My latest of 8 years sounds like marbles rolling around in the top end. Get it serviced at your GM dealer and have them make a note of the noise each time. If it fails they should back you up.


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ct_corey Enthusiast

ct_corey

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5 minutes ago, BIGDOGx said:

Yes the random tapping noise is what you are talking about right?

 

My 14 6.2 has the same random occasional tap noise at idle.

Way different then ours. Have you watched the videos? it happens dozens of times after the RPS drop and lasts a few minutes. Its raps so loud I can hear it in my kitchen while my truck warms up. 

 

I don't think we are talking about the same noise. 

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