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I have a low level thumping noise when driving on rough surfaces. Think I might need sway bar bushings. Can anyone tell me what
size the bar is on a 08 GXP? Thanks.
You sure it's coming from the low end? I have the same kinda noise, and it happens to be that my top hats on my front struts are worn out. Not an immediate thing to change but it does get annoying.
07 G6 base model 2.4L
Mods: Duraflex Bodykit / IPP Carbon Fiber Hood / tranny cooler / AVS window visors...more to come
does that kinda sound like something real light is loose up front? almost sounds like a damn valence is loose flopping in the wind but not cause its even when im driving REAL slow. that real light thumping that I've been looking for for WEEKS but its been so COLD I cant stand to crawl around outside for long. Yes its seriously aggravating the F*** out of atleast one person.
It def sounds like my issue...it's the top strut mounts there worn out. If they move just a little they make an annoying thumping sounds even going slow. Have you gone on a gravel road? Sucks doesn't it?
07 G6 base model 2.4L
Mods: Duraflex Bodykit / IPP Carbon Fiber Hood / tranny cooler / AVS window visors...more to come
Thanks for all the info. Never thought about the top strut mounts. Are they something I can purchase and replace myself?
If you've never messed with suspension parts before, I'd recommend a shop do it. Only because you have to compress the spring. If you can tackle this job, you'll need a spring compressor, I'd also highly recommend air tools. Makes the job easier. I'm sure there is a how to on installing lowering springs. Just follow the steps on disassembly. I hope this solves your annoying problem, good luck and keep us updated.
07 G6 base model 2.4L
Mods: Duraflex Bodykit / IPP Carbon Fiber Hood / tranny cooler / AVS window visors...more to come
IIRC - my G6 the 3.5L has the 3.6L GXP sway bars in the front/rear, so make sure you measure the bars with a 19 to 24mm wrench to be sure!
What I found even though my G6 was supposed to have smaller sway bar I got the largest since it probably was laying around in the plant and used....
Performance: WAMS, K&N 69 Series CAI, Custom Magnaflow Exhaust built with a Camaro SS Muffler and Glasspack with 4 inch double-wall stainless steel tips, Thunderbolt 8.2mm High-Performance Spark Plug Wires, NGK Laser Iridium Spark Plugs, Pennzoil Ultra Full Synthetic, Resonator Delete, Racingline Motor Mount Inserts, Racingline Grounding kit. (4 additional grounds from battery to front bumper for DDM tuning HIDS)
Handling: Moog Front Control Arms and Toe Ends, Racingline STB, Koni Yellow "4 Point" Suspension -Front to Rear- , Energy Suspension Poly Front Sway Bar bushings, Energy Suspension Tie-rod bushings, Energy Suspension Front Control Arm replacement mounts, Eibach Pro-kit springs, BMD Front Endlinks, Genuine Saab .9mm Rear Chamber Shims, 19mm Motorsports spacers on all 4 tires.
Stopping: Cobalt SS Front Brembo's, R1Concepts Premium Cross-slotted Front Rotors, R1Concepts Premium Cross-slotted and Drilled rear Rotors, Hawk HPS pads, ATE Super Blue Brake Fluid, BMD Steel Braided Brake Lines, Michelin Pilot Sport A/S 3 tires.
Appearance: Revotec Eagle Eye CCFL Projectors, Red Calibers, 6000k 35w DDM fogs, 6000k 55w DDM lows, LED Taillights, DDM Tuning LED Switchback Turn Signals, Konig Crown 17x7.5 Rims. 30% tint in front windows, rear windows @ 15% tint
Safety & Security: Cobra XRS 9470 Radar Detector, Experimental 2mm rear mounted camera with Bluetooth connectivity to my phone, GOSHERS Universal Blind Spot Detection System w/ LED Indicators, Waze GPS App with a windshield mount for early warning for police coupled with Radar Detector (double-whammy).
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