While driving the truck lost all forward motion, now it only moves in reverse?

2002 CHEVROLET SILVERADO
32,199 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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AYALA2018
truck will only go in reverse. I was driving and mid drive I just lost all forward motion. It shifts from park to neutral, drive, reverse ,3,2,1 but will only move in reverse or neutral ABS light illuminates periodically and red brake light but then goes off and comes back later.
May 15, 2025 at 11:27 PM
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CANNON1349
  • ✓ASE Certified Mechanic
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Hello, can you feel the truck engage in every gear? Typically, when all forward gears are lost it means the forward drum has failed. However, we should still check the transmission fluid for dark coloration, burnt smell, followed by dropping the pan to inspect.

William
May 18, 2025 at 1:01 PM
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AYALA2018
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Yes you can feel each gear except drive.
May 18, 2025 at 8:08 PM
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CANNON1349
  • ✓ASE Certified Mechanic
  • 861 POSTS
  • ASE Certified Mechanic
Do you have a scan tool of any kind? Most are around $20 on Amazon, I would scan the system for codes regarding the ABS light however the transmission fluid should be checked. Please let me know.

William
May 18, 2025 at 8:48 PM
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AYALA2018
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No burnt smell and fluid is good can still see original color. Put code reader on and 5 codes popped up they all pertain to the ABS and wheel speed sensor. We changed the wheel speed sensor, and it's still only moves in reverse and neutral.
May 19, 2025 at 4:16 PM
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STRAILER
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If there are not transmission codes that is a sign that something inside the transmission has broken, it will need to be removed and rebuilt.
May 22, 2025 at 9:15 AM
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