1993 GMC C2500 code 26?????

1993 GMC C2500
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THIRDEYETEMPLE
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Electrical problem
1993 GMC C2500 V8 Two Wheel Drive Automatic

my van started doing weird shifting and sometimes stays stuck in second gear. i also noticed when the brake is applied the abs engages. this problem only happens sometimes. it went away for months and recently came back. the code reader said it was a quad driver problem. the original battery was replace with starting deep cycle battery. could this have caused the problem? not sure what to do....where do i start?
Jun 20, 2010 at 6:59 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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HMAC300
  • CAR REPAIR CONTRIBUTOR
  • 48,601 POSTS
the ABS unit may be going bad, but clean your grounds. If it is going to get worse it will. wait until then...... if yor abs goes out you will still have brakes just the abs won't work....
Jun 23, 2010 at 6:12 PM
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