2000 Chevrolet Silverado SPEEDO PROBLEM, SHIFT PROBLEM

Tiny
DKLUCHA47
  • MEMBER
  • 2000 CHEVROLET SILVERADO
  • 165,000 MILES
SPEEDO WON'T WORK UNDER 10 MILES AN HOUR, AFTER THAT IT WORKS EXCEPT JUMPS AND CAUSES TRANS TO SHIFT UP AND DOWN, THEN WHEN U ENGAGE 4X4 LEVER, SPEEDO JUMPS ALL THE WAY FROM 10-15 UP 50-55, UNTIL THE FRONT AXLE ENGAGEMENT LITE COMES ON THEN SPEEDO WORKS FINE, DOESN'T JUMP OR CAUSE TRANS SHIFTING PROBLEMS. REPLACED SPEED SENSOR, RAN MANY GRDS. TO CASES AND BODY, TESTED POWER FEEDS, NO PROBLEM FOUND AND PROBLEM STILL EXIST, UNPLUG POWER FEED TO ELECTRIC SYNCHRO IN TRANSFER CASE AND SPEEDO DON, T JUMP ERRATICALLY. CAN THA ELECTRIC COIL CAUSE SPEEDO SENSOR TO DEMAGNATIZE OR CAUSE SPEEDO FLUCTUATION SO DRASTICALLY?
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Tuesday, July 2nd, 2013 AT 11:13 AM

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Tiny
HMAC300
  • EXPERT
Check for a short in wiring or it's a bad speedo
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Wednesday, July 3rd, 2013 AT 7:46 AM

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