Attack of the Mysterious Thunk
Thread Starter
Staging Lane
Joined: Apr 2014
Posts: 68
Likes: 0
From: Illinois/Wisconsin
Attack of the Mysterious Thunk Over the past couple days my GXP has developed a funny thunk from the vicinity of the left front wheel. It only appears at low speeds or when the wheel is turned quickly. The thunk is not jarring or jolting, or making the car lurch, so I'm not assuming it's the trans. It does bleed speed faster than before when coasting, so am I looking at a wheel bearing, or is this more of a strut / CV joint issue? 
Any help would be appreciated, Thanks!
Any help would be appreciated, Thanks!
LS1Tech Sponsor
Joined: Dec 2005
Posts: 2,932
Likes: 12
From: CT
had that happen on my monte carlo.. cv joints.. you have to get the whole axle assembly replaced...
__________________
06MonteSS / DiabLew Tune
2014 Camaro 2SS/RS - LS3, 6-speed manual, short-throw performance shifter, NPP dual-mode performance exhaust, 1LE front splitter, ZL1 rockers, Z28 Rear Spoiler, all paint-matched Red Rock Metallic, BMR strut tower brace, Cold Air Inductions cold air intake, Apex Motorsports, Inc. catch-can, Custom DiabLew Tune
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com
06MonteSS / DiabLew Tune
2014 Camaro 2SS/RS - LS3, 6-speed manual, short-throw performance shifter, NPP dual-mode performance exhaust, 1LE front splitter, ZL1 rockers, Z28 Rear Spoiler, all paint-matched Red Rock Metallic, BMR strut tower brace, Cold Air Inductions cold air intake, Apex Motorsports, Inc. catch-can, Custom DiabLew Tune
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com
LS1Tech Sponsor
Joined: Dec 2005
Posts: 2,932
Likes: 12
From: CT
the axle assemblies are around $250-300 each...
and the hubs are about 170-200 each...
I had to replace both front wheel hubs and both front axle assemblies multiple times, heh...
and the hubs are about 170-200 each...
I had to replace both front wheel hubs and both front axle assemblies multiple times, heh...
__________________
06MonteSS / DiabLew Tune
2014 Camaro 2SS/RS - LS3, 6-speed manual, short-throw performance shifter, NPP dual-mode performance exhaust, 1LE front splitter, ZL1 rockers, Z28 Rear Spoiler, all paint-matched Red Rock Metallic, BMR strut tower brace, Cold Air Inductions cold air intake, Apex Motorsports, Inc. catch-can, Custom DiabLew Tune
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com
06MonteSS / DiabLew Tune
2014 Camaro 2SS/RS - LS3, 6-speed manual, short-throw performance shifter, NPP dual-mode performance exhaust, 1LE front splitter, ZL1 rockers, Z28 Rear Spoiler, all paint-matched Red Rock Metallic, BMR strut tower brace, Cold Air Inductions cold air intake, Apex Motorsports, Inc. catch-can, Custom DiabLew Tune
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com
First of all no...check out your suspension first font go throwing money for no reason, have you visually checked out everything? Are your sway bar links screwed up?
For CV axles you shouldn't pay more than 100 per side.
For CV axles you shouldn't pay more than 100 per side.
Douchebag On The Tree
Joined: Nov 2009
Posts: 1,268
Likes: 4
From: Indianapolis, IN
Find the part number and then search for it on Amazon. You'll find much better part prices and usually free shipping.
Get under there and check things out. Hub/wheel bearing wouldn't be a thunk or when turning your wheel. It would be a grinding, growling sound that was dependent on speed and would get louder when the culprit side was loaded (during turns at speed).
CV axle is usually a clicking sound more than a thunk, but not out of the question. Check the boot for tears and the surrounding area for grease flung around. Twist the axle with you hand between the boot and where it connects to the trans and listen for any noise and feel for play.
Check your end links. Sometimes they are too skinny on bigger cars and can bend on top of the joint wearing out. Also check your sway bar bushing. The factory rubber can last forever or sometimes fall apart immediately. The bar moving around would clunk under load.
Also don't overlook the intermediate steering shaft. There are a lot of GM cars that have crappy intermediate steering shafts. It makes a deep clunk when the wheel is turned, usually at parking lot speeds. All that's needed is a cleaning of old grease and replacing with new grease and then work it around. I have to do this every 6 months in my G6.
Trending Topics
Thread Starter
Staging Lane
Joined: Apr 2014
Posts: 68
Likes: 0
From: Illinois/Wisconsin
Just got an oil change / chassis lube. Seems to have alleviated the issue. Next time a lift is available for me to use (friend has his Vettes in storage on and under his lift, work schedules, etc) I'm gonna jimmy around with all of these suggestions. Thanks guys!
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo Douchebag On The Tree
Joined: Nov 2009
Posts: 1,268
Likes: 4
From: Indianapolis, IN
I'm gonna assume your outer tie rods and/or end links have zerk fittings, needed grease, and were clunking.
Registered User
Joined: Nov 2014
Posts: 2
Likes: 0
same problem my left side sway bar link pin was broken right side sway bar link pin collar was broken under the bushing creating a creaking sound while turning also the thud was on the acceleration and braking and hitting bumps that was my broken sway bar link pin