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Rattling noise in front end

18K views 29 replies 11 participants last post by  dalejrfan88 
#1 ·
I have a 2010 Silverado. There's been some rattling sound coming from the front of the truck. Used to be it would just rattle for a while when I started out cold, but now it's doing it the whole time while driving. Anyway, I just wondered if anyone else had a similar problem so I know what to look for.
 
#3 ·
No rattles on my 2010. But, that's what warranties are for!
 
#4 ·
Are you talking about valve chatter when it's first started?
 
#5 ·
Nah, just sounds like something loose or whatever. Doesn't matter what speed or what you're doing. Louder on bumps. Just thought maybe somebody else ran into a similar thing. I'll find it! As far as warranties, this is where sometimes it does and sometimes it doesn't and you know when you go to the dealer, it doesn't! I won't go to the dealer anyway unless it's something I can't handle or it's gonna cost a fortune! I'm a bit anal about anybody else touching my vehicles.
 
#6 ·
I bet you have some ice or snow rattling around somewhere. Thaw the thing out in a warm garage and see what happens. Also a quick inspection by yourself under the truck might reveal something.
 
#8 ·
Do you have side steps or nerf bars? They can rattle if it's loose, and it actually can sound like it's coming from the front axle.
 
#9 ·
lzn197 said:
I bet you have some ice or snow rattling around somewhere. Thaw the thing out in a warm garage and see what happens. Also a quick inspection by yourself under the truck might reveal something.
He's in New Jersey so it's not likely to see stubborn ice chunks rattling aound inside the body.
 
#11 ·
Fight nice guys! No, the only thing I added to the truck was the cap (new,and leaked like a sieve). I don't know, might be connected to the hood. I'll finger it out. I had only 10 miles on the truck, and had a bad module in the door connected to the remote door lock and tire pressure sensors. Took 'em 5 days to figure that one out! At least (knock on wood) my bow ties are still good! Starting to wonder about Chevy! Still have my '96 anyway, in case this one craps out! Later!
 
#12 ·
Check this out. I have the same issue in my 2007 NBS LTZ. You should be able to get it under warranty. Doubt I can. It has only gotten worse. Now mine is a squeek. Hopeing to make an appt. tomorrow if the dealer is open.

Take it back to the dealer and reference this TSB #10-03-08-002A

2010 Chevrolet Silverado - 4WD | Sierra, Silverado VIN C/K Service Manual | View All Bulletins | Document ID: 2543370
#10-03-08-002A: Squeak/Creak/Rumble or Rattle Noise from Front of Vehicle During Low Speed Maneuvers in Cold Ambient Temps (Enlarge Upper ID of Strut Jounce Bumper) - (Nov 3, 2010)

Subject: Squeak/Creak/Rumble or Rattle Noise Coming from Front of Vehicle During Low Speed Maneuvers in Cold Ambient Temperatures (Enlarge Upper Inside Diameter (ID) of Strut Jounce Bumper)

Models: 2007-2011 Cadillac Escalade, Escalade ESV, Escalade EXT
2007-2011 Chevrolet Avalanche, Silverado LD, Suburban LD, Tahoe
2007-2011 GMC Sierra LD, Sierra Denali, Yukon, Yukon XL LD, Yukon XL Denali

This bulletin is being revised to add the 2011 model year and clarify the text in the Subject, Condition, Cause and Correction. Please discard Corporate Bulletin Number 10-03-08-002 (Section - 03 Suspension).
Condition

Some customers may comment on a squeak, creak, rumble or rattle noise coming from the front of the vehicle or it may sound like it is coming through the front of the dash, during low speed maneuvers. The noise may be most noticeable in ambient temperatures of 0°C (32°F) or colder. The noise will most likely be heard during small to medium suspension travel such as in parking lot maneuvers, over small bumps, or when stopping.
Cause

This condition may be caused by the front strut jounce bumper inside diameter to the piston rod of the strut experiencing a slip/stick condition during certain cold ambient temperature conditions.
Correction

1. Test drive the vehicle in the same range of ambient temperatures of 0°C (32°F) or colder and the same low speed maneuvers mentioned by the customer in order to verify the concern.
2. Using Chassis Ears, verify that the noise is most noticeable at the upper strut mount area. The concern may be on one or both sides of the vehicle.
3. By jouncing the vehicle, the noise or vibration can be isolated using a stethoscope, and may possibly be felt in the vicinity.
4. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in SI.
5. Remove the LH and RH strut assemblies from the vehicle. Refer to Shock Absorber and Spring Assembly Replacement in SI.
6. Disassemble the coil spring and top mount assembly from each strut. Refer to Shock, Shock Component, and/or Spring Replacement in SI.

Object Number: 2422112 Size: LF
Click here for detailed picture of above image.
7. Remove the jounce bumper (5) from the top mount assembly (3).
8. Secure the jounce bumper upright in a bench vise. Only clamp the lower portion of the bumper to allow the upper portion of the ID to remain at rest.

Object Number: 2414939 Size: SH
Click here for detailed picture of above image.

Note: A standard drill bit will not cut the ID of the jounce bumper. The jounce bumper will comply and stretch around the bit, then return after the drill is removed.
9. Prepare a single flute countersink bit or a bladed cutting bit, or equivalent, in a die grinder, Dremmel Tool, or equivalent.

Object Number: 2422094 Size: SH
Click here for detailed picture of above image.

Note: Do Not attempt to drill out the jounce bumper while attached to the strut top mount assembly. The bumper must be removed from the top mount assembly.

Note: Do Not attempt to drill out the jounce bumper from the lower end toward the upper end, as this could affect characteristics of the jounce bumper.

Enlarge the Upper ID (1) from the top side of the jounce bumper to the following dimensions:
• Diameter of enlarged ID: 16 mm
• Depth of enlarged ID: 15 mm

Object Number: 2414196 Size: SH
Click here for detailed picture of above image.
10. Ensure that the ID of the jounce bumper is as smooth as possible and free of loose material. If necessary, an Exacto knife, or equivalent, can be used to carefully trim the edge and remove any loose material. The photo above shows a jounce bumper with the enlarged upper ID (1) as compared to the original ID (2).

Note: Ensure that the jounce bumper is fully seated to the top mount assembly.
11. Install the jounce bumper to the top mount assembly. Ensure that the jounce bumper is secure to the top mount.
12. Assemble the coil spring and top mount to each strut. Refer to Shock, Shock Component, and/or Spring Replacement in SI.
13. Install the LH and RH strut assemblies to the vehicle. Refer to Shock Absorber and Spring Assembly Replacement in SI.
14. Move the vehicle outdoors to allow it to return to ambient temperature.
15. Test drive the vehicle under the same conditions to verify the repair.

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation

Description

Labor Time

E9516*

Enlarge ID of Front Strut Bumper - Both Sides

1.3 hrs**

*This is a unique labor operation for bulletin use only. It will not be published in the Labor Time Guide.

**The labor time includes test driving the vehicle.
 
#14 ·
Hey, thanks Mike (?). Very well could be the problem! I'll have to pay more attention to the temp. thing. Today it didn't do it when I went out. That's what'll happen when I take it to the dealer! Also the guys mentioned their bowties crapping up--- just noticed mine are going too! Thanks again, DaDeO
 
#18 ·
After I said I have not had an issue, I heard that sound. When I read the bulletin here, I was convinced. I will have mine looked at the next time I am in for service.
 
#19 ·
Mine started like that and now its a squeek too. I can rock the truck from side to side and it does it. I mean this is a 30 thousand dollar truck that sounds like a farm tractor going down the road. I hate it. Can't wait to get it fixed. I have an 07 so I hope its under warranty.
 
#20 ·
I went to the service dept. and told the guy my "bowtie" was starting to get dark spots all over it, and asked if he was aware of a problem, and he says "yeh, we've changed a few" (read many!) He said they'd replace it ,but they had to order one. Then I dropped the service bulletin on him, and he said he hadn't seen that! I said, "well you have now, and I'm having the condition mentioned". He said that when the "bowtie" comes in they'd take care of everything. Funny, he didn't even look at the emblem and took my word on the rattling problem. BTW, my wife's Malibu had a problem with noises in the front end, but all they did was squirt some lube in somewhere. I'm thinking it could be the same problem that I have. Let me know how you make out!
 
#21 ·
I bought the wife's Acadia at the same dealer I bought the truck from (an I am also a member of the Acadia forum). My dealer is used to me bringing in various data sheets, TSB's, etc. On more than one occasion, they have told me that I've taught them things they don't know. Not sure if that is a good thing or a bad thing.... :?
 
#23 ·
My '08 has a rattle noise near the glove box (or in that area) but it seams to be at highway speeds. I think I have it narrowed down to the plastic trim molding that goes up the passenger side of the windshield. If it is not that, then I am thinking it is something under the dash and I really don't want to take that apart.

To either rule-out or prove that it is that trim piece, I have a 150 mile round trip on the highway planned for this weekend. I am going to (and I hate to say this) duct tape that trim piece to the glass... just to see if the rattle does not happen on this trip.

I am hesitant to ask the shop to take a look at it initially... and this could be a good piece of advise for any future readers of this post.

Before taking it in, make sure EVERYTHING is out of the cab and try to reproduce it!

From experience: I complained about a rattle in my F150. Turned out it was a ratchet strap that was thrown in the passenger side map compartment. Very embarrassing. :oops:

Jim
 
#25 ·
Haven't heard anything for awhile. Since maybe Feb.? If it starts again, like next fall or winter, it might be the problem Mikejustowns mentioned! I went to the dealer about the problem a while back, and showed them a copy of that TSB, and they said they hadn't heard anything about it! Yeh! Got my "bowtie" changed for a new one while I was there.
 
#26 ·
I took my truck to the dealer just before my 36K warranty expired to see if they could eliminate the rattle noise that I thought was coming from the glove box or the center console. They ordered a new glove box and installed it telling me that the dashboard was poorly installed at the factory. I have a hard time believing that. Anyway, now at 38K, it is worse. I received my first recall letter today indicating that the transmission dipstick comes loose and rattles. They have a fix and to bring it in. That happens to be exactly where I think the sound is coming from. I can't wait to take it in now. I was contemplating selling the truck over this stupid noise. I love the truck, but the noise is very irritating. I will update when I get it back.
 
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