Rattle wind noise from A-pillar glove box area?

[Deuce16GMCs]

Has anyone else with 21+ had a rattle/wind noise coming from the bottom of the passenger side A-pillar or behind the glove box or the passenger side firewall area at highway speeds of 80 mph or above?

 

[B-train]

Probably another area where spot welds aren't made correctly, then covered up. LOL

 

[Deuce16GMCs]

Probably another area where spot welds aren't made correctly, then covered up. LOL

That sounds unfixable.

 

[B-train]

Just a joke.....ish. some had welds that leaked above the windshield.

I would look at the grill that lays down below the windshield by the wipers. Maybe the wiper blades themselves. Or, possibly the cabin air filter cover.

If it sounds like the area you described, does the noise only happen at a certain mph? Does wind affect it? Can you hear it anywhere else if you sit in the passenger seat? Sometimes noises have a way of traveling and from the driver's seat it sounds " right there"

 

[Deuce16GMCs]

It's definitely coming from behind the glove box. Someone told me there's a bulliten stating that there's a rattle caused in the passenger side fire wall from a plastic cable harness thing.

It's happens at highway speeds over 80 and it's especially loud when there's a cross wind hitting the passenger side.

Hoping someone has more information on the bulliten. I can't find any info on it.

 

[John52269]

Noise near front passenger at high speeds (22 Denali): Anyone else?

When rolling dow the interestate at 80+ mph, I hear some weird knocking/tapping sounds coming from the passenger front. They sound outside. My wife was riding with me yesterday and commented on it. At first I dismissed it as crazy wind noise (which does not sound like wind noise at all), but now...

www.tahoeyukonforum.com

 

[Deuce16GMCs]

Noise near front passenger at high speeds (22 Denali): Anyone else?

When rolling dow the interestate at 80+ mph, I hear some weird knocking/tapping sounds coming from the passenger front. They sound outside. My wife was riding with me yesterday and commented on it. At first I dismissed it as crazy wind noise (which does not sound like wind noise at all), but now...

www.tahoeyukonforum.com

Thank you. The dealer checked the heat shield and said all the clips were good.

I'm going to check the AC lines.

 

[Deuce16GMCs]

I think I know what it is.

Where can I go to find a copy of a TSB?

 

[StephenPT]

I think I know what it is.

Where can I go to find a copy of a TSB?

Here you go - https://static.nhtsa.gov/odi/tsbs/2023/MC-10232837-9999.pdf

 

[VAguy68]

I'm going to look at these items on the TSB. I have a rattle that happens above 70 mph on both sides and to me, it sounds like it's coming from inside the A-pillar. I had the sunroof drain TSB resolved and I think it could be those lines. This noise doesn't happen if it is raining which leads me to believe it's those lines. Do they run through the A-pillar?

 

[Deuce16GMCs]

No. They run through the fire wall.

One them so mounted at the top of the firewall.

The other you can clear see with the hood open. It's a circular plastic gastric the penetrates the fire wall right where the glove box is.

 

[AJMBLAZER]

Hmmmmm. Our '22 Yukon is doing this. We can hear a faint rattle occasionally from the front passenger side while going at highway speeds. It does have a moon roof.

 

[Deuce16GMCs]

Hmmmmm. Our '22 Yukon is doing this. We can hear a faint rattle occasionally from the front passenger side while going at highway speeds. It does have a moon roof.

Place you ear where the A piller meets the dash. Or open the glove box and listen to the firewall.

Is it louder then?

 

[Deuce16GMCs]

Check this out.

The Tahoe has this rattle behind the glove box/a-pillar area at exactly 80-85 miles an hour.

The service manager manager agreed to drive the vehicle at 80-85 mph. He duplicated the rattle. Everytime. He 100% confirms there's a rattle in the a-pillar area between 80-85mph.

BUT then he refuses to let the technicians attempt to diagnosis it because they aren't allowed to drive above the speed limit.

His suggestion...drive with the radio turned up. Seriously. $94,000 and that's the official answer.

They send out a field engineer, the engineer drives the vehicle at 70mph and says there's no issues under normal driving condition since the speed limit is 70.

My mind is blown away. Super Cruise let's you drive up to 85mph. And you're telling me that any issue with the vehicle that happens after 70mph cannot be diagnosed?

Why does GM screw with their customers like this? I don't want to fight tooth and nail to get them to honor their warranty.

I guess it's time to escalate. All I wanted was for them to fix it. I can't believe this is the norm for them.

 

[Chad G 1979]

Well technically your not supposed to speed, and while on the clock they are definitely not allowed to break laws. So your rattle at 80-85 is beyond their allowed scope of ability to diagnose and fix. I mean sure they could tear down the a pillar and fuess what is causing the rattle, but if they make ut worse, they wouldn't know until you go speeding down the roads and then complain again. And then they also run the risk of making it worse or damaging parts. Most states frown on driving 80 85 and these are big vehicles to try to slow down or evade something at those speeds.

 

[AJMBLAZER]

Check this out.

The Tahoe has this rattle behind the glove box/a-pillar area at exactly 80-85 miles an hour.

The service manager manager agreed to drive the vehicle at 80-85 mph. He duplicated the rattle. Everytime. He 100% confirms there's a rattle in the a-pillar area between 80-85mph.

BUT then he refuses to let the technicians attempt to diagnosis it because they aren't allowed to drive above the speed limit.

His suggestion...drive with the radio turned up. Seriously. $94,000 and that's the official answer.

They send out a field engineer, the engineer drives the vehicle at 70mph and says there's no issues under normal driving condition since the speed limit is 70.

My mind is blown away. Super Cruise let's you drive up to 85mph. And you're telling me that any issue with the vehicle that happens after 70mph cannot be diagnosed?

Why does GM screw with their customers like this? I don't want to fight tooth and nail to get them to honor their warranty.

I guess it's time to escalate. All I wanted was for them to fix it. I can't believe this is the norm for them.

It’s not.

Ours was fixed. They tightened up the wiper cover assembly.

 

[AJMBLAZER]

Well, ours is not fixed. Back to the dealership.

 

[Deuce16GMCs]

Well, ours is not fixed. Back to the dealership.

Very frustrating. I'm going to handle this differently with GM. Since they're refusing to fix their product.

 

[AJMBLAZER]

So has anyone successfully fixed this?

We are now out of warranty and it’s still doing this. The dealership’s attempt at fixing it made it a bit better but it’s not gone. About to try to do it myself but just wondering if anyone else has fixed it themselves?

 

[Deuce16GMCs]

So has anyone successfully fixed this?

We are now out of warranty and it’s still doing this. The dealership’s attempt at fixing it made it a bit better but it’s not gone. About to try to do it myself but just wondering if anyone else has fixed it themselves?

I found my issue. And fixed it myself the day before GM bought it back for refusing to attempt to fix it.

The bolts the hold the running board bracket on the front passenger side, were never tightened from the factory.

GM UAW employees were probably on their 17th union mandated break and just missed something so minor that could have caused the run board to fall while driving and cause catastrophic damage or kill someone. But hey, at least their asking for 30% pay increase for doing less.

So, if the issue is not the one of the two mentioned in the TSBs (the HVAC line bracket in the firewall loose or the wiper motor bracket motor arm under the cowl loose), then you may check on the issue I had.

Get under the truck directly where the backside of the passenger side front wheel well and the front of the passenger side running board meet. Or follow your passenger side a-pillar all the way down to bottom on the car.

Under there while looking up, you see a black bracket that secured the running board to the frame. The bolts are behind the fender liner. They were all dangling.

The issue was that when you go 80mph or above. The air dampers move the air around the vehicle and pushes air into the fender liner.

The fender liner rattles and hits the loose bolts. The loose bolts, although they are no where near the a-pillar, rattle on metal and transfered the sound all the way up the sheet metal so it sounded like it was a rattle at the a-pillar/sunroof/glovebox area.

I tightened them to spec and rattle was gone. At any speed. Never came back.

Check those bolts.