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Forum: C4 Technical Issues

Any and all problems involving your C4, including ZR1 and LT4. INCLUDE THE YEAR OF YOUR CAR.

  1. Sticky Thread Sticky: OPTISPARK DIAGNOSTICS, or is it something else ?

    Started by c4c5specialist, 12-20-2011 10:25 AM
    2 Pages
    1 2
    • Replies: 18
    • Views: 21,285
    07-28-2016, 03:58 AM Go to last post
    • Replies: 5
    • Views: 581
    02-04-2018, 12:08 PM Go to last post
  1. Question C5 wheels & tires on a 87 c4 coupe

    Started by HUEY, 02-03-2018 06:06 PM
    • Replies: 0
    • Views: 415
    02-03-2018, 06:06 PM Go to last post
  2. Wink Battery suppliers

    Started by Chester, 12-15-2017 05:16 PM
    • Replies: 6
    • Views: 672
    01-06-2018, 07:33 AM Go to last post
  3. Question C4 opti numbers

    Started by Chester, 12-07-2017 06:38 AM
    • Replies: 3
    • Views: 485
    01-01-2018, 06:30 PM Go to last post
  4. four post lift installers

    Started by Chester, 12-31-2017 08:52 AM
    • Replies: 0
    • Views: 214
    12-31-2017, 08:52 AM Go to last post
  5. Lift to work on c3&C4

    Started by Chester, 12-02-2017 04:47 PM
    • Replies: 9
    • Views: 799
    12-30-2017, 01:09 AM Go to last post
  6. Question exhaust manifold paint

    Started by Chester, 12-02-2017 04:34 PM
    • Replies: 4
    • Views: 466
    12-30-2017, 01:06 AM Go to last post
  7. holliday wishes

    Started by ken mohr, 12-25-2017 04:51 AM
    • Replies: 0
    • Views: 161
    12-25-2017, 04:51 AM Go to last post
  8. Msds

    Started by Chester, 12-18-2017 06:09 AM
    • Replies: 0
    • Views: 194
    12-18-2017, 06:09 AM Go to last post
  9. Wipers from Hell and a loss of Cruise?

    Started by ChuckG, 06-23-2014 08:31 PM
    • Replies: 9
    • Views: 2,215
    12-12-2017, 03:15 PM Go to last post
  10. wtb kwik lift

    Started by Chester, 12-12-2017 06:02 AM
    • Replies: 0
    • Views: 188
    12-12-2017, 06:02 AM Go to last post
  11. Balancer c4 removal

    Started by Chester, 10-08-2017 05:18 PM
    • Replies: 1
    • Views: 428
    12-07-2017, 06:46 AM Go to last post
  12. leather refinish

    Started by ken mohr, 09-05-2016 03:40 AM
    • Replies: 6
    • Views: 1,294
    12-04-2017, 04:44 AM Go to last post
  13. low coolant

    Started by ken mohr, 09-19-2017 03:42 AM
    2 Pages
    1 2
    • Replies: 21
    • Views: 1,865
    11-14-2017, 05:27 AM Go to last post
  14. Need new opti C4

    Started by Chester, 10-20-2017 05:44 AM
    • Replies: 7
    • Views: 552
    10-25-2017, 09:40 AM Go to last post
  15. Dealers opti

    Started by Chester, 10-21-2017 03:50 PM
    • Replies: 0
    • Views: 293
    10-21-2017, 03:50 PM Go to last post
  16. Thumbs up Burping my baby

    Started by Chester, 10-16-2017 05:02 AM
    • Replies: 0
    • Views: 290
    10-16-2017, 05:02 AM Go to last post
  17. Spark plug wire removal opti

    Started by Chester, 10-14-2017 05:09 AM
    • Replies: 0
    • Views: 249
    10-14-2017, 05:09 AM Go to last post
  18. 87 Corvette Service Engine Soon Code 13 & 44

    Started by jsm00z28ss, 09-18-2017 07:54 PM
    • Replies: 0
    • Views: 301
    09-18-2017, 07:54 PM Go to last post
  19. No crank

    Started by Chester, 09-03-2017 06:13 AM
    • Replies: 3
    • Views: 491
    09-05-2017, 05:31 PM Go to last post

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