ABS error

Discussion in 'Engine Performance + Maintenance' started by 1989k2500, Dec 3, 2019 at 8:41 PM.

Car Parts
  1. 1989k2500

    1989k2500 Newbie

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    Hello , this is my first post.
    I have a ABS light illuminated on the dash of the truck I bought not too long ago.
    I have done the paper clip in the diagnostic port trick and saw the brake light glass short 6 times and longer 1 time. So that makes me wonder if that indicates error 61. That error seems to be a reset switch, if I am not mistaken.

    Now, where can I find this reset switch? And how do I go about to remedy the error?

    a list I found online :
    *Code 21: right front speed sensor or circuit open
    *Code 22: missing right front speed signal
    *Code 23: erratic right front speed signal
    *Code 25: left front speed sensor or circuit open
    *Code 26: missing left front speed signal
    *Code 27: erratic left front speed signal
    *Code 29: simultaneous drop-out of front speed sensors
    *Code 35: vehicle speed sensor or open circuit
    *Code 36: missing vehicle speed sensor signal
    *Code 37: erratic vehicle speed sensor signal
    *Code 38: wheel speed[​IMG] error
    *Codes 41 through 54: control valves[​IMG]
    *Codes 61 through 63: reset switches
    *Code 65 and 66: open or shorted pump motor[​IMG] relay
    *Code 67: open motor circuit or shorted BPMV output
    *Code 68: locked motor or shorted motor circuit
    *Codes 71 through 74: memory errors
    *Code 81: brake[​IMG] switch circuit shorted or open
    *Code 86: shorted anti-lock indicator lamp[​IMG]
    *Code 87: shorted brake warning lamp
     
  2. Schurkey

    Schurkey I'm Awesome

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    There'll be a diagnostic procedure in the service manual.

    You didn't mention WHAT VEHICLE this is, but based on your user name, I'm guessing an '89 K2500.

    Many folks (not me) will tell you to just disable the prehistoric Kelsey-Hayes Rear Wheel Anti-Lock (RWAL) on these vehicles. The ABS system is disabled in 4WD anyway.
     
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  3. 1989k2500

    1989k2500 Newbie

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    Yes, sir. That is correct I have an 1989 k2500 4x4. I would prefer to keep the ABS working, just because. well it is installed.
    Do you have a link to the service manual by any chance?
     
  4. df2x4

    df2x4 Domestics only.

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    Thanks to a very generous member here you can download any of them for 1995 and older trucks for free. Here's the thread.

    https://www.gmt400.com/threads/88-95-service-manuals.43575/
     
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  5. 1989k2500

    1989k2500 Newbie

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    Thank you for this link . And thank you to the original poster of it. I'll be reading through it right away.
     

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