Thread: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings

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  1. #21 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
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    I disconnected the battery for well over an hour. Still having the same problem.
    Any other ideas?
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  2. #22 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    The Mod Monkey Mad Monkey's Avatar
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    i didnt read.. have you cleaned the maf?

    the IAT built into the maf will cause that kinda problem, so will a sever vacuum leak
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  3. #23 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    GTX Level Member Travisgt2's Avatar
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    may sound super dumb but ive had the same thing happen all because i didnt plug a few things back in so mack sure EVERYTHING is plugged back in mine was not plugging in the maf and evap system that created my problems
    04 GT2: 180 t-stat, cold air intake, reptile tune, plog, hv3, gt1 cam, 90#springs, new push rods, new lifters, port polished heads, lim, uim and tb, 06 Impala brakes and steel brake lines. Cosmetic: black roof rails, under glow, Pontiac ground light, blue hud dic radio controls and cluster. To come custom hood.
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  4. #24 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
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    So here's an update on my situation.
    I replaced the gas pedal with the accelerator pedal position sensor and reset the computer, then got the same code after driving for a few minutes. I sent the part back and got a new one from the factory repeating the process and got the same results. Next I cleaned out and then replaced the mass airflow sensor and still no luck. The same issues with the same codes. Any other ideas?
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  5. #25 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    GTX Level Member Sudden's Avatar
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    I'm with Mad Monkey. I had a similar fate when a vacuum line was off.
    2005 Grand Prix GTP CompG. Overkill PCM, ZZP S2 I/C, ZZP MPS W/ 3.3" pulley, 1.9 YT rockers, 42.5# injectors, Moroso wires and AL104 plugs, 180 Thermostat, LS4 MAF.
    Front PLOG, Rear PLOG, crossover, all ceramic coated. ZZP 3" Downpipe and 3" exhaust pipes with Borla S-Type mufflers.
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  6. #26 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    GT Level Member orange57's Avatar
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    I had the same issue, and swapped out the pedal and all was good. it was like $60 at autozone.
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  7. #27 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    GT Level Member Seachicken's Avatar
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    You need to do a app learn when you install a new pedal assembly.

    (in theory)
    06 Gxp, Bermuda Blue
    82 K5, Black on 35's
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  8. #28 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
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    is that a process performed with a scanner?
    I have now replaced the mass airflow sensor and still no luck. I did however just noticed that my serpentine belt is heavily worn and in need of replacement. If one or more Pully has slipped and my timing is off could that be causing this problem?
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  9. #29 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
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    And at no point has any vacuum hose been removed, just the main intake tube with the maf assembly
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  10. #30 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    Moderator dsmuts's Avatar
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    Your belt has absolutely nothing to do with your timing.
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
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  11. #31 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    GXP Level Member 91parkave's Avatar
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    Quote Originally Posted by chadwick View Post
    is that a process performed with a scanner?
    I have now replaced the mass airflow sensor and still no luck. I did however just noticed that my serpentine belt is heavily worn and in need of replacement. If one or more Pully has slipped and my timing is off could that be causing this problem?
    No. You need to go through and test the connections between your PCM and app and tb
    06 GXP | 222/227 cam/cartuning turbo kit on 8psi/meth/e85 coilovers/ still on stock trans at 130k
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  12. #32 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    GT Level Member Seachicken's Avatar
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    Quote Originally Posted by chadwick View Post
    is that a process performed with a scanner?
    yes, you will need a bi-directional scanner. Make sure the peddle is in its 0% throttle postion. When you start the relearn, the sensor output is recorded and used as your new baseline for throttle postion


    if that doesnt help u might want to check for wiring problems between the app and tb
    06 Gxp, Bermuda Blue
    82 K5, Black on 35's
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