- Ls4 performance
- Overkill motorsports intake swap GXP
- Aftermarket gauge pods,pillars or mounts for w-bod Imp?
- 2009 Impala SS P0306 Code - Stumped
- What 4t65e hd trans upgrades need for no more than 400hp
- LS6 cam Vs Hot cam
- Slim fans and more
- New here!
- Code P0521 Oil sensor
- 06 gxp
- LS4 car as a DD?
- Drone Free Setup
- BC Racing Coilovers
- Battery issues...
- Oil leaking... please help.
- Looking at a proper DOD delete
- 255/45r18s all the way around on impala
- wheel speed sensor wire
- intense racing motor mount install question
- 7 Facts about the Front Wheel Drive LS4 Cars
- No start gear indicator in rev. But it's in park really
- Wanna buy a 2007/8 GXP
- BMR Parts - Install Tq Specs?
- Water pump manifold
- bilsteins or KYB AGX
- Radio troubleshoot
- 06 ss lt4 harmonic balancer removal..
- Snow tires
- Hole in engine oil dip stick tube
- Cleaning intake
- remove intake
- Fitting SLP PowerFlo on an LS4 GXP
- 5V or 10V Battery Current Sensor
- Are all ls4s 05-09 the same? Need motor for my 09
- DOD Removal Question
- Want to do the suspension
- Grand Prix GXP Front Tire Sizes
- Check engine light
- Heated mirrors on the Monte or Impala?
- 4T65E-HD problem in 1st gear (slip. bang)
- spring blocks
- Bilstein struts gxp
- Big 3/4 Wiring Upgrade - LS4
- Struts
- HELP with these plugs please!
- Is it logical to do this for a summer only never rain driven car?
- Can I use all ls7 lifters since dod is turned off?
- Torque Specs
- Exhaust for sale Pick up only
- Give me the low down on the Grand Prix GXP
- Battery draw
- Police Lower Control Arms - Impala
- Transmission Leaking Fluid
- reduce drag/optimize airflow
- T1000 Questions
- GXP stock sway bar or 34MM GMPP?
- Reduced Engine Power
- P0700 and P0730 codes
- Need help with tire rubbing
- Tbss intake on ls4
- Help with Power Steering problem!
- Before pulling trigger on TR6ix's....
- Need Help Picking Out Trans Cooler Kit
- collapsed lifter? Are LS7 lifters the replacemant?
- Truck manifold intake swap
- GXP suspension and brakes
- Wheel Width, Anyone running 8 or 8.5 inch wide 18inch high wheels ?
- LS4 High mileage?
- LS6 Manifold & Doug Thorley's
- Cylinder #4 misfire 09 Impala SS 150k New to LS4's
- What's a "normal" trans temp range?
- Best intake/cam combo to run with cartuning turbo kit?
- ABS/TC Light On - How to Diagnose? Sint3k? Others?
- Bought my second LS4 car in barely 2 months!
- Valve Cover Torque Spec?
- Cv shaft squeak
- Fuel pressure?
- HVAC Fan and heated seats not functioning
- Shift Kit & Trans Drain Questions
- What is the transmission line fitting kit part number?
- How many miles do you have on your TEP?
- Charging System Failure - all new components
- GXP speaker install
- Anyone ever wrapped the underhood exhaust?
- Grand Prix GXP - Spare Tire Part #
- Transmission fluid
- dipped my wheels
- Rpms
- GXP Factory Battery Size
- Replacing wheel bearing on GP GXP
- negative camber problem
- Radiator Fan Timing Questions
- Coolant Overflow Tank Question
- I have a 08 SS impala need help
- a/c not working
- Factory Strut Tower Part #?
- Quick DOD/AFM Question
- GXP differences
- Shifting problem?
- LS4 DBC throttlebody
- Rotor Scoring getting bad...
- Question Nav system
- My car key was taken
- Ummm... Few questions.
- transmission issue?
- Extended length oil filters for 07-09 only
- Cartuning transmission pan
- radiator fan melted!
- Upper torque strut mount - dogbone
- Problems with InTune 2
- RhinoRamps
- 2005 Pontiac Grand Prix GXP DOD removal
- The last of a dying breed?
- LS4 burned 1.4 qts in 500 miles? Anyone burn that much?
- Are the mods worth it?
- 2004-2008 Pontiac Grand Prix Duraflex Stingray Z Hood
- Think my PS pump is pooched
- started that exhaust today
- Blowing blue smoke when coming out of DoD mode
- Farewell LS4...Hello LS1 !!
- Who has had a triple edge rebuild installed?
- DIC display... Maximum Gs...?
- A little cleaning....suggestions
- ProSport 60mm Premium EVO Wideband Digital AFR Gauge Install Thread
- Shop won't remove exhaust U-bend before cat
- Backing Plates
- Fan question?
- Oil filter wrench
- Anyone know Gm # for rear 08 GXP spoiler gaskets?
- Exhaust Cutout switch
- Dod problem
- Who makes the 3 in exhaust system
- Pressure control solenoid
- SLP Fabricated Aluminum Intake?
- Car hesitation, gummy feeling?
- headlights just randomly shut off interrmitently
- A/C Driver's side
- Lowering springs
- P0335 Code
- 2005 ls4
- Engine Source
- Sway bar link
- engine oil cooler anyone?
- Thinking out loud
- Intake Manifold Spacers
- thinking about going in for the ignition recall? think again
- Gxp sway bar
- Oil Pump
- Strut question
- wheel cleaners
- turning off dod car burning oil
- 06 Impala SS lifters ??
- Proposed exhaust setup
- hard cold start in the morning, getting progressively worse
- Rough Idle, stall, misfires
- voltage drop
- knock retard and knock counts
- Throttle body LS4
- 08 GXP Issues
- power steering rack mystery
- Yaw Rate sensor
- LS4 Intake Swap Questions
- Don Rome STB Bars Buick LaCrosse Super
- Won't shift out of Park
- Motor mounts
- opinion on quick detailers?
- Intune i2 Tuner not reading my vin#
- Impala SS Exhaust
- Crankshaft position sensor
- Quick question...
- Updated Shift kit install thread
- help needed with a few temps.
- Intake Valley Cover
- DoD delete
- Smoke behind alt?
- Spark plugs Impala SS
- Impala dashboard clicking
- Finally finished the rims. Whew.
- Chrome Rim Flakes
- need help! speedometer and tracrion control,
- What kind of lug nuts do you use?
- Need help
- Air intake
- Decrease in mpg?
- Question on head lights...Impala/ Monte Carlo
- Not ls4 related but I need help
- Need help...rotational screeching noise
- LS2 Intake manifold and LS7 maf swap thread
- parasitic drain
- The latest...Have a look!
- First three mods, bang for the buck.
- GXP strut tower braces...
- Delco Radiator or aftermarket?
- possible to put power passenger seat from impala to monte
- Looking to buy a stock LS4 throttle
- Buick Enclave LS4 Swap?
- So I finally started my LS6 intake swap and other mods...
- VSS wire on strut tower brace 06 Monte SS
- Anyone on here ever had a custom stronger axle built?
- 225 Potenza reo50a's discontinued
- Cabin Filter
- Questions for people with aftermarket radios
- Having speedometer issues
- Error Code P0521
- LS4 flexplate needed
- HVAC Blower Motor
- Well i would of ran a 10s pass butt
- New to the ls4's and looking for some tips
- Full Poly mount set now available!!
- Street tune is finally at the best it can be dyno on Thursday
- 4t65e slipping after rebuild...need help fast!!
- Thorley's
- Coil spring question...
- Moog Craplinks
- Some pictures and videos from street racing made safe!
- Need help with nuts that connect downpipe to catback
- how to check for a power draw
- X11nut v1 front mount for sale
- There is now a complete set of poly mounts
- 2007 lower control arms
- Need help with vacuum leak 2008 Chevy impala ss 5.3
- Impala ss balancer
- cat backs...
- Another suspension question..
- Stand Alone Trans Cooler & Turbo ?
- WTB: LS4 Crankshaft 2007+ 58x reluctor
- catalytic converor going out?
- Electrical Issue
- powered sub
- Strut mounts is any brand better?
- so whos digging out from the blizzard of 2016?
- How to add second iat
- Cracked manifold
- New charge pipe built
- GXP front strut mounts
- need help with p0449 code
- What could this be?
- Mighty Mouse Catch Can installed
- ls2 cam
- Shaker Pics as Requested
- 228/230 .588/.592 112+4
- Plugs?
- throttle body adapter and nitrous plate
- Windshield glare
- Anyone change this idler before?
- New car?
- this anyone on here?
- just curious about the tranny fluid
- Fuel pump
- Anyone run drag radials or full slicks on their ls4?