Thanks Thanks:  0
Likes Likes:  0
Dislikes Dislikes:  0
Results 1 to 5 of 5
  1. #1
    Member
    Join Date
    Nov 2006
    Location
    KEMPNER, TX
    Posts
    313
    Corvette(s)
    1996 388 LT1
    Post Thanks / Like
    Rides
    0

    Default Help Tracking Trouble Codes

    My son and his 96 LT1 are at Ft Hood near Killeen, TX, for his summer training and I'm outside of Dallas, so we're not close to each other. Anyway, his 96 LT1 Vette just threw a Service Engine Soon light and in pulling the codes he came up with C71, C72, H71 and H72.

    I've been trying to translate those but have been unsuccessful. I looked on this Forum and even did a Google search but have come up empty for the 96 maybe because it's OBD II.

    Can someone please point me in the right direction or tell me what they mean.

    Thanks,

    Jake

    West Point ROCKS!

  2. #2
    Member Schrade's Avatar
    Join Date
    May 2009
    Location
    Not in CF; BANNED!!!
    Posts
    1,315
    Corvette(s)
    '90 LT 5
    Post Thanks / Like
    Rides
    0

    Default

    Quote Originally Posted by JAKE View Post
    My son and his 96 LT1 are at Ft Hood near Killeen, TX, for his summer training and I'm outside of Dallas, so we're not close to each other. Anyway, his 96 LT1 Vette just threw a Service Engine Soon light and in pulling the codes he came up with C71, C72, H71 and H72.

    I've been trying to translate those but have been unsuccessful. I looked on this Forum and even did a Google search but have come up empty for the 96 maybe because it's OBD II.

    Can someone please point me in the right direction or tell me what they mean.

    Thanks,

    Jake

    West Point ROCKS!
    Here... Get a pencil and paper clip.


  3. #3
    Member
    Join Date
    Nov 2006
    Location
    KEMPNER, TX
    Posts
    313
    Corvette(s)
    1996 388 LT1
    Post Thanks / Like
    Rides
    0

    Default

    Quote Originally Posted by Schrade View Post
    That's what he did and came up with C71, C72, H71 and H72. My problem is I'm finding conflicting explanations as to what they mean.

    Jake

    West Point ROCKS!

  4. #4
    Member TWISTERUP's Avatar
    Join Date
    Aug 2008
    Location
    Powhatan VA
    Posts
    138
    Corvette(s)
    1996 LT1 Coupe
    Post Thanks / Like
    Rides
    0

    Default

    code 71 LCD dimming output circuit (circuit shorted to battery voltage or CCM internal open)

    72--LCD dimming output circuit (open or shorted to ground)

    From reading the charts.... sounds like the circuit for the dash lights--radio lights--Ac/heater etc. Pretty long diag charts for both codes. The good news is it it should be driveable until he can get to a FSM and a VOM.

  5. #5
    Member Schrade's Avatar
    Join Date
    May 2009
    Location
    Not in CF; BANNED!!!
    Posts
    1,315
    Corvette(s)
    '90 LT 5
    Post Thanks / Like
    Rides
    0

    Default

    Quote Originally Posted by JAKE View Post
    That's what he did and came up with C71, C72, H71 and H72. My problem is I'm finding conflicting explanations as to what they mean.

    Jake

    West Point ROCKS!
    You must write down the module under which the codes come up. It's on the link how it works. I would cut and paste it here, but it's says the same thing here if I cut and paste.

    Are you seeing the section at the bottom of the link? Is the link working for you?

Similar Threads

  1. Pulling Codes on a C5
    By Patrick in forum C5 Technical and Performance
    Replies: 57
    Last Post: 02-18-15, 08:54 AM
  2. 1995 Trouble Codes - Help
    By Gary6586 in forum C4 Technical and Performance
    Replies: 0
    Last Post: 12-27-07, 03:05 PM
  3. New mods, complete with trouble codes
    By rel3rd in forum C4 Technical and Performance
    Replies: 6
    Last Post: 03-23-07, 03:24 PM
  4. Trouble Codes
    By lwhssh in forum C4 Technical and Performance
    Replies: 3
    Last Post: 09-15-06, 09:59 AM
  5. Diagnostic Trouble Codes
    By LA VETT in forum C5 Technical and Performance
    Replies: 0
    Last Post: 03-29-03, 01:26 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •