Bouncing at 45-50 MPH - Chevy and GMC Duramax Diesel Forum

04.5-05 LLY Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.

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post #1 of 36 (permalink) Old 04-29-2009, 12:28 PM Thread Starter
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Bouncing at 45-50 MPH

Since i got the truck last year i've noticed a bouncing between 45-50 MPH. I've changed tires and rims and it still does it. Any one have this problem too, or any suggestions would be grately appreciated

05 chevy 2500HD EC/SB ally

Leveling kit and 33's
LBZ MP
Amsoil
PPE standard level 3, thanks to madjacks racing
5" MBRP turbo back
Boost and Pyro with pillar, thanks to alligator performance
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post #2 of 36 (permalink) Old 04-29-2009, 01:59 PM
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feel like seams in the road??

maybe the front wheel bearings or the intermediate steering shaft, or most likely both.

both are a terrible design, and with bigger tires and any alterations from the stock front end, they both can wear out faster.

I have 70K on my 05 4x4 LLY and just put on both last week from a nasty little vibration like that...
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post #3 of 36 (permalink) Old 04-29-2009, 02:05 PM
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rotors maybe?
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post #4 of 36 (permalink) Old 04-29-2009, 02:07 PM
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mine is the same...45-50 mph. a little embarrassing when i have passengers. i am now getting a little concerned if the hubs are wearing out, then ball joints

2006 2500 LBZ CCLB * NFAB STEP BARS * PPE MANIFOLDS/UPPIPES
35" TOYO OC MT'S 18" GEAR BIG BLOCKS * FABTECH 6" LIFT * FABTECH HD TIE RODS
S&B CAI * LOAD LIFTER 5000 AIRBAGS * PPE DEEP PAN * PPE SHIM KIT
4" STRAIGHT PIPE EXHAUST * MBRP 5" TIP * DIAMONDEYE DOWNPIPE
BANKS INTERCOOLER * RESONATOR HOLE PLUGGED * AIRDOG II 165
EDGE INSIGHT MONITOR * ALLIGATOR PERFORMANCE FULL EGR DELETE
EFILIVE DSP5 * BLACKDIRTYMAX PPE5 TRANS ML CONVERTER
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post #5 of 36 (permalink) Old 04-29-2009, 02:12 PM
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Mr. Obvious here...

Large tires, older truck....how'er the shocks?

2007 LBZ 3500 LT3 DRW Crew Cab, Sulastics, Putnam XDR 15K, B&W 30K-Turnover GN+Companion, Ride-Rite Air...EFI'd by Rob
2008 LMM 3500WT DRW Crew Cab, 8 'Flat/GN, Workforce Alum Toolbox, Ride-Rite Air

Use-ta Haves 2006-6.0 3500 WT DRW ExCab Flatbed, 2005-LLY 3500 LS DRW Crew Cab, 2002-LB7 3500 LS DRW Crew Cab
I Live my life in such a way that when my feet hit the floor in the morning...Satan shudders & says "Oh shit, he's awake!"

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post #6 of 36 (permalink) Old 04-29-2009, 02:14 PM
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in the last 5k (around 70K) i needed both front hubs (wheel bearings), tie rode ends, ball joints, idler & pit man arm, intermediate steering shaft, and 2 power steering hoses, AND shocks!

she sure drives nice now tho
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post #7 of 36 (permalink) Old 04-29-2009, 02:20 PM
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wow...you just dropped some $$ man. that sucks...but like you said, im sure it rides nice now.

2006 2500 LBZ CCLB * NFAB STEP BARS * PPE MANIFOLDS/UPPIPES
35" TOYO OC MT'S 18" GEAR BIG BLOCKS * FABTECH 6" LIFT * FABTECH HD TIE RODS
S&B CAI * LOAD LIFTER 5000 AIRBAGS * PPE DEEP PAN * PPE SHIM KIT
4" STRAIGHT PIPE EXHAUST * MBRP 5" TIP * DIAMONDEYE DOWNPIPE
BANKS INTERCOOLER * RESONATOR HOLE PLUGGED * AIRDOG II 165
EDGE INSIGHT MONITOR * ALLIGATOR PERFORMANCE FULL EGR DELETE
EFILIVE DSP5 * BLACKDIRTYMAX PPE5 TRANS ML CONVERTER
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post #8 of 36 (permalink) Old 04-29-2009, 02:23 PM
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everything but the shocks were covered in my GM PP extended warranty. it was totally awesome. they would have covered the shocks too, but i had just replaced them at like 60K with ranchos when i was trying to figure out what was making all that noise.

so i'm down about $200...

pretty fair deal
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post #9 of 36 (permalink) Old 04-29-2009, 02:25 PM
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cool...glad that works out for you!!

2006 2500 LBZ CCLB * NFAB STEP BARS * PPE MANIFOLDS/UPPIPES
35" TOYO OC MT'S 18" GEAR BIG BLOCKS * FABTECH 6" LIFT * FABTECH HD TIE RODS
S&B CAI * LOAD LIFTER 5000 AIRBAGS * PPE DEEP PAN * PPE SHIM KIT
4" STRAIGHT PIPE EXHAUST * MBRP 5" TIP * DIAMONDEYE DOWNPIPE
BANKS INTERCOOLER * RESONATOR HOLE PLUGGED * AIRDOG II 165
EDGE INSIGHT MONITOR * ALLIGATOR PERFORMANCE FULL EGR DELETE
EFILIVE DSP5 * BLACKDIRTYMAX PPE5 TRANS ML CONVERTER
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post #10 of 36 (permalink) Old 04-29-2009, 02:27 PM Thread Starter
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Just had a wheel bearing fixed and it didn't go away. The steering wheel doesn't shake but the hole truck seems to be bouncing. Dealer said I'd have to put stock tires on it to eval. it.
So i've been trying to get a cheap set of tires

05 chevy 2500HD EC/SB ally

Leveling kit and 33's
LBZ MP
Amsoil
PPE standard level 3, thanks to madjacks racing
5" MBRP turbo back
Boost and Pyro with pillar, thanks to alligator performance
05stocklly is offline  
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