2002 Chevy Trailblazer Tack

2002 CHEVROLET TRAILBLAZER
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PUDGE68
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Electrical problem
2002 Chevy Trailblazer 6 cyl Two Wheel Drive 106 K miles

Is the tack hooked up to any kind of sencor in the transmission
Feb 16, 2009 at 11:30 AM
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MASTERTECHTIM
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no, its connected to the ignition module
Feb 16, 2009 at 11:32 AM
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PUDGE68
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It will work for a while then it will drop to 0 when I stop. If I cut it off and restart it it will work for a few min.
Feb 16, 2009 at 11:37 AM
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MASTERTECHTIM
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that sounds like a tricky one. my money is on a faulty tachometer itself. how i would diagnose this is to use a scan tool and watch rpm and if it reaads correct when the tach reads zero i would suspect a bad tach
Feb 16, 2009 at 11:50 AM
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PUDGE68
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I just change transmission filter and fluid iin it and after that is when it started this that is why I was woundering if this could have caused the problem


Thanks
Feb 16, 2009 at 12:00 PM
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MASTERTECHTIM
  • ✓Experienced Mechanic
  • 4,750 POSTS
no, not a chance. double check the wiring by the transmission dipstick tube because thats near the ignition wiring harness to make sure there is nothing touching.
Feb 16, 2009 at 12:08 PM
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