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2005 Silverado Front End Noise


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larry78
User

Sep 19, 2010, 2:59 PM

Post #1 of 8 (7881 views)
2005 Silverado Front End Noise Sign In

I have a 2005 Silverado Z71 4WD Extended Cab with 59,000 miles on it. The problem started out with an ABS problem and I posted that here http://autoforums.carjunky.com/...cgi?post=79593#79593

Long story short the dealer fixed the ABS problem by replacing the wheel sensors but the truck has been making strange noises since:
  • An intermittent, rotational, metallic grinding sound (seems to have been cured by tightening the lug nuts the dealer left loose!)
  • Very occaisional metallic pinging or popping from Left Front
  • Very occaisional groan or howl from left front while turning or at below 40 mph going straight

In addition when I "tip" the Left Front wheel in or out (like checking ball joints) there seems to be play in the axle bearing at the hub end. RF does not do that.

I have taken the truck back to the dealer but I would like to know whether, while replacing the wheel speed sensors, they could have done something wrong to cause a problem (in addition to loose lug nuts) or whether this is something like a bearing or Frown CV joint and the timing is coincidental.

Thanks!

Larry78


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Sep 20, 2010, 8:24 AM

Post #2 of 8 (7864 views)
Re: 2005 Silverado Front End Noise Sign In

YIKES! Lug nuts left loose! Hey - anything can happen to anyone sometimes but that's primal to be sure they are correct.

If wheel is loose than the brake rotor could move too and no telling what could be damaged with that?? I'd be back at the dealer saying just what you said here,

T



larry78
User

Sep 20, 2010, 12:31 PM

Post #3 of 8 (7854 views)
Re: 2005 Silverado Front End Noise Sign In

Tom,

Oh it is at the dealer. I sent the service manager essentially the same write-up. To be fair the lug nuts were snug, like you might get if you just used the "air" part of an air ratchet and did not torque them down. I suspected trouble when my semi-lame impact wrench spun the first one off like nothing. Then I switched to my air ratchet and saw how loose they really were. Have not heard back from the dealer yet. I just dropped it off again yesterday (Sunday, 9/19).

Someone told me the wheel speed sensors and wheel bearings are integral on this model. T or F? When I Googled the parts it did not look that way.

Thanks,

Larry78


Sidom
Veteran / Moderator
Sidom profile image

Sep 20, 2010, 1:20 PM

Post #4 of 8 (7848 views)
Re: 2005 Silverado Front End Noise Sign In

I'll just add my 2¢ for what its worth.

The speed sensor does bolt to the hub but the hub doesn't have to be disassembled to replace just the speed sensor. Now if the exciter ring was replaced as well, then everything would've had to come apart.

As far as the wheel being left loose, that is never a good thing and if you were able to remove the lugs with a cheap air ratchet & home compressor than more than likely they were not torqued. BUT the only real way to be sure would be to measure either the breakaway torque or apply more torque in 5ft lb increments to be sure.

The only reason I mention this, is the shop I work at everything gets torqued to specs with torque sticks & then a torque wrench. If a lugnut is properly torqued & removed with an average air gun with average air line pressure then will be almost no "hammering effect". The nut will literally zip right off.

We have had this problem with cars going to other shops that don't torque wheels and are use to taking off their overtorqued lug nuts. They are use to the hammer effect. They get one that is properly torque and the 1st thing they say is "Wow, this wheel was loose. Look how easy they all come off".

This doesn't sound like the case here but thought I would mention it just due to the statement you made about the impact gun. With the other customers, the crazy thing is you will never convince them. You show them the $200 sticks, the $400 torque wrench and they are still happier with Bubba rattling their lugnuts down finishing with the statement "Oh yea...These babies are tight....They aint going no where"Angelic


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Sep 20, 2010, 1:29 PM

Post #5 of 8 (7839 views)
Re: 2005 Silverado Front End Noise Sign In

Bubba huh?........................ You been in my neighborhood?



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



larry78
User

Sep 20, 2010, 1:34 PM

Post #6 of 8 (7836 views)
Re: 2005 Silverado Front End Noise Sign In

Sidom,

Understood. This was a light duty Air Compressor connected to a Home Depot $29.95 impact wrench followed by a $29.95 Home Depot air ratchet (just the "air" part not manual ratcheting.) My dad had a garage for 26 years and then was a Snap-On dealer for about 14 years so I have a handle on the difference. He cringes when he sees my tools....waiting to inherit his but he is still using them at age 81 to restore antique cars to national show-winning quality Smile.

I probably should invest in a 1/2 torque wrench. My 3/8 job does not go up to the appropriate torque.

Thanks for everyone's help!

Larry78


Sidom
Veteran / Moderator
Sidom profile image

Sep 20, 2010, 1:53 PM

Post #7 of 8 (7831 views)
Re: 2005 Silverado Front End Noise Sign In

LOL....I'll bet your dad is cringing...... But you know for home use that stuff is fine. It's not meant to withstand everyday use and probably doesn't get used every day...

Wheel torquing has only really got big again I would say in the last 10 to 15 years before than no one torqued wheels (Not counting high end Euro or specialty wheel shops) When I 1st started torquing, it was a royal PITA & I hated it.....15 years later I find myself torquing my own wheels at home...



OH yea Desi, we gotta Bubbas in every neighborhood. And they'll take Bubba's word as gospel..
Like the guy with the 03 Taurus that wanted 20W 50 with the oil change cuz Bubba told him is was fine for everything..... As he stormed out he said he was gonna "get us all fired"....
I've told you I've been looking for a reason to switch shops but have been lazy....This was a couple of months ago. I was thinking about calling him up & tell him to hurry it up.....Sly


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Sep 20, 2010, 2:55 PM

Post #8 of 8 (7824 views)
Re: 2005 Silverado Front End Noise Sign In

Yeah, I get people that think they are smart ass's and want me to use heavy oil in late model cars. They get the same answer.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.







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