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Thread: P0463 P0700 U0073 Codes, Fuel gauge dead

  1. #11
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    My thoughts are that it's not stuck down. The code appeared the morning after a fill up. On the short drive home from the gas station, the gauge read full, so the float wouldn't have been down to get stuck there. Maybe stuck up?
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  2. #12
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    I've replaced the sending unit and I still get the p0463 and dead fuel gauge. When I clear the code the guage goes up to half for a minute. Then the code comes back and the needle drops to empty.

    What do I try next? Is it possible I did something wrong? I put the inner fuel line on (which is a much easier quick-disconnect than the external line) plunked it in and buttoned it up. Is there something the float could be caught on, something I didn't prep right on the sender, anything...?
    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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  3. #13
    Moderator, Retired -Ray-'s Avatar
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    I believe there are 2 sending units since it's a split tank.
    Rest in Peace Charlie!

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  4. #14
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    P0463 indicates the primary, which is the one I did.
    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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  5. #15
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    I took a peek under while putting on the winter wheels today. It took me all of 2 seconds to find the fuel pump connection on the side of the tank and see the problem. It was a little tight getting wire strippers in there, but otherwise an easy fix.

    Last edited by J Wikoff; 11-20-2018 at 09:56 AM.
    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,

    Winter-wear:
    Bremmerkraft BR09 winter wheels, Weathertech floor liners, oil pan heater

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  6. #16
    Moderator, Retired -Ray-'s Avatar
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    Wow.
    Rest in Peace Charlie!

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  7. #17
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    Does the pic show? It's not coming up on my phone or tablet.
    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,

    Winter-wear:
    Bremmerkraft BR09 winter wheels, Weathertech floor liners, oil pan heater

    Admin: www.pontiacbonnevilleclub.com

  8. #18
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    Quote Originally Posted by J Wikoff View Post
    Does the pic show? It's not coming up on my phone or tablet.
    Yep, I see the purple wire cut. I'm using a pc.
    Rest in Peace Charlie!

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    Quote Originally Posted by RichsGreyGT View Post
    this site is hardcore modding central.

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