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Thread: what is G8 designation 2009.5 associated with

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    Default what is G8 designation 2009.5 associated with

    New owner new Member. In the forums I occasionally see some G8's referred to as 2009.5. are they referring to a production date or a significant change in configuration.
    2009 G8 GT mostly stock
    2014 Challenger RT 5.7 Hemi 6 speed manual
    1987 S-10 Truck 283 TPI 700r4 3:42 posi
    1984 S-10 Blazer 87 Iroc 350 roller 700r4 4wd
    1957 Chevy Belair 2 dr hardtop to get an LS and 6 speed

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    Beyond Help tchr49's Avatar
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    Most obvious changes incorporated in the 09.5 were the addition of Bluetooth, cup holder in the center of the lower rear seat cushion, upgraded lifters, 8 quart oil capacity vs. 8.8 in previous years.
    things are not what they appear to be.....

    2009.5 Liquid Red,Onyx Red, Premium Package, e85 Surprise Package

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    Administrator Chewy's Avatar
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    Also, all GXP's are 2009.5's!

    2009.5 MSM GXP 500ish N/A RWHP. Mods include but aren't limited to: Texas Speed 418 (6.8L) fully forged held together with ARP from top to bottom, PRC 255cc heads, Rick Crawford intake plenum, TB port, polish and tune, Roto-Fab 102mm CAI w/LS7 MAF, Kooks 1-7/8" headers wrapped with DEI, Corsa catless system, Circle D 3200 Stall, 3.45 final drive, BMR's complete street bushing kit and sway bars, Eibach Pro Kit, G-Force Axles, running on staggered VMR 710's with Bridgestone RE11 rubber. HSV triple gauge pack with Calais smokers kit mod, V6 tails, debadge/rebadge, V6 door handles, AU black door trim, Maverick Man under hood strut covers, & washer and bolt kit, fully corrected paint thanks to Adams Polishes and my hard work. Built with reliability in mind with some power for those times when you need to pass or go over a big hill. Just a poser, not a racer!

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    Maybe I have a 2009.4 . I have Bluetooth, but no drink holders. Oil capacity I don't know yet
    2009 G8 GT mostly stock
    2014 Challenger RT 5.7 Hemi 6 speed manual
    1987 S-10 Truck 283 TPI 700r4 3:42 posi
    1984 S-10 Blazer 87 Iroc 350 roller 700r4 4wd
    1957 Chevy Belair 2 dr hardtop to get an LS and 6 speed

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    Administrator Chewy's Avatar
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    Quote Originally Posted by muscleparts View Post
    Maybe I have a 2009.4 . I have Bluetooth, but no drink holders. Oil capacity I don't know yet
    Did you buy it new? Many bought the module to give the older cars BT which may be the case with your car.

    2009.5 MSM GXP 500ish N/A RWHP. Mods include but aren't limited to: Texas Speed 418 (6.8L) fully forged held together with ARP from top to bottom, PRC 255cc heads, Rick Crawford intake plenum, TB port, polish and tune, Roto-Fab 102mm CAI w/LS7 MAF, Kooks 1-7/8" headers wrapped with DEI, Corsa catless system, Circle D 3200 Stall, 3.45 final drive, BMR's complete street bushing kit and sway bars, Eibach Pro Kit, G-Force Axles, running on staggered VMR 710's with Bridgestone RE11 rubber. HSV triple gauge pack with Calais smokers kit mod, V6 tails, debadge/rebadge, V6 door handles, AU black door trim, Maverick Man under hood strut covers, & washer and bolt kit, fully corrected paint thanks to Adams Polishes and my hard work. Built with reliability in mind with some power for those times when you need to pass or go over a big hill. Just a poser, not a racer!

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    Beyond Help tchr49's Avatar
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    Someone correct me if I'm mistaken, but I believe 2009.5's have an L in the VIN??
    things are not what they appear to be.....

    2009.5 Liquid Red,Onyx Red, Premium Package, e85 Surprise Package

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    My earlier 09 has an L... There is a vin break in the last several digits though. In the last 6 digits, if it's 300000 or higher, it's an 09.5. I think it's 3 anyway.
    09 G8 GT SRM Premium Sport Sunroof



    HSV GTS Triple Gauge Pod, GXP Rear Sway Bar and Diffuser, HSV SuperSport Steering wheel, SOLO axle-backs, Magnaflow cats, Red Hot Shift Knob, Auto-dim Mirror, Hood Vent Mod, Removed Intake Cover, Rotofab CAI, Cortex, Infinity door speakers, MTX Re-Q5, Pioneer Amp & RF Sub, LED lows & fogs, Spyder tails, Power Slot rotors, Wagner Thermoquiet pads, Chrome lug covers, Glovebox light,

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    Bremmerkraft BR09 winter wheels, Weathertech floor liners, oil pan heater

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    Beyond Help tchr49's Avatar
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    Quote Originally Posted by J Wikoff View Post
    My earlier 09 has an L... There is a vin break in the last several digits though. In the last 6 digits, if it's 300000 or higher, it's an 09.5. I think it's 3 anyway.
    Knew it was something like that. Mine's in the 3XXXXX and it's an 09.5
    things are not what they appear to be.....

    2009.5 Liquid Red,Onyx Red, Premium Package, e85 Surprise Package

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    Beyond Help tchr49's Avatar
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    Quote Originally Posted by J Wikoff View Post
    My earlier 09 has an L... There is a vin break in the last several digits though. In the last 6 digits, if it's 300000 or higher, it's an 09.5. I think it's 3 anyway.
    Knew it was something like that. Mine's in the 3XXXXX and it's an 09.5
    things are not what they appear to be.....

    2009.5 Liquid Red,Onyx Red, Premium Package, e85 Surprise Package

  10. #10
    Junior Member Roger05's Avatar
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    Default MY09.5 when from ?

    I understood all MY09.5 were built from October 2008 (whether Holden domestic, Holden export or HSV).
    HSV Senator SV08 manual MY09.5. LS3 & TR6060. Eibach springs on factory MRC. Walkinshaw (HM) 2.5" catback. Currently being rebuilt.
    Existing: Harrop HTV1900 FDFI super, Harrop OTR, Harrop/ZL1 fuel pump, Harrop (Serck) oil cooler, Comp Cams Rocker Arm Trunnion Upgrade, 160 degree thermo, NGK IZTR5B-11, Powerbond OEM replacement harmo, PSI valve springs, LSM Engineering cam, Trend pushrods, GM AC belt retention kit. Installed & tuned mafless by Sam's Performance, 9psi 586rwhp. Lifters / cam case hardening has failed - noisy.
    Rebuild: Diamond pistons/rings, Callies rods, LS7 lifters, new (same grind) cam, dual valve springs, Powerbond PB1117-SS harmo, new oil pump, new ACL race bearings throughout, bore/hone, heads serviced. Installed & tuned mafless by Sam's Performance - results to come !

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