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  1. P0716 & P0717 Code after Rebuild. Searching for right gear. Sometimes wont go into OD

    Started by DnaProdigy, 07-16-2013 10:11 PM
    1999 grand prix, code, gear, p0121, p0716, p0717, rebuild, searching, shift problem
    • Replies: 3
    • Views: 4,467
    Last Post: 07-18-2013 12:10 PM
    by DnaProdigy  Go to last post

    Forum:
    1997-2007 4 speed Automatic (4T65E) (4T65E-HD)

  2. GXP 5.3L P0121 Throttle Body Code fixed, now Idles at 1100-1500 RPM - Need help

    Started by MikeJenkins, 05-28-2013 06:54 PM
    53l, body, code, fixed, gxp, idle, idles, p0121, rpm, throttle
    • Replies: 5
    • Views: 7,182
    Last Post: 05-29-2013 02:15 PM
    by 91parkave  Go to last post

    Forum:
    5.3L V8 (LS4)

  3. Have a few DTC's P0121, P0521, P0523

    Started by SDGTP99, 01-22-2013 04:14 PM
    dtc, p0121, p0521, p0523
    • Replies: 6
    • Views: 3,563
    Last Post: 01-27-2013 07:25 PM
    by SDGTP99  Go to last post

    Forum:
    5.3L V8 (LS4)

  4. P0121 Code and Trans not shifting correctly

    Started by Stappen720, 09-25-2011 07:40 PM
    code, correctly, p0121, shifting, trans
    • Replies: 9
    • Views: 3,715
    Last Post: 09-28-2011 08:17 PM
    by Stappen720  Go to last post

    Forum:
    1997-2007 4 speed Automatic (4T65E) (4T65E-HD)

  5. p0121 code

    Started by gtpinsc, 11-19-2008 02:17 PM
    code, p0121
    • Replies: 14
    • Views: 4,664
    Last Post: 03-20-2010 10:13 PM
    by corsagtp  Go to last post

    Forum:
    3.8L V6 Supercharged (L67)(L32)

  6. P0121 code repeatedly

    Started by Grossman, 01-30-2010 01:41 PM
    code, p0121, repeatedly
    • Replies: 0
    • Views: 1,917
    Last Post: 01-30-2010 01:41 PM
    by Grossman  Go to last post

    Forum:
    3.8L V6 Supercharged (L67)(L32)

  7. P0121

    Started by corsagtp, 12-09-2009 07:39 PM
    p0121
    • Replies: 0
    • Views: 1,379
    Last Post: 12-09-2009 07:39 PM
    by corsagtp  Go to last post

    Forum:
    Introductions/Noob Questions

  8. Still getting P0121 code after replacing TPS. Any ideas?

    Started by PCweber, 09-19-2009 08:25 AM
    code, ideas, p0121, replacing, tps
    • Replies: 0
    • Views: 2,368
    Last Post: 09-19-2009 08:25 AM
    by PCweber  Go to last post

    Forum:
    General Tech Discussion

  9. P0121 & poor performance after dyno tune

    Started by nugzo, 05-08-2009 05:11 PM
    dyno, p0121, performance, poor, tune
    • Replies: 18
    • Views: 5,574
    Last Post: 06-13-2009 04:11 PM
    by nr4drgtp  Go to last post

    Forum:
    3.8L V6 Supercharged (L67)(L32)

  10. Troubleshooting Help! p0120 & p0121

    Started by Lawngoose, 10-21-2008 10:24 AM
    p0120, p0121, troubleshooting
    • Replies: 18
    • Views: 3,290
    Last Post: 10-25-2008 05:10 PM
    by TDCRacing  Go to last post

    Forum:
    General Tech Discussion

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