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hi don't believe its the crank sensor that's needs calibration it is the computer it self even if it was used you need to send it to dealer with vin # and they will re program it for you forget how much it costs but is under 100 hope this helps jerry what computer did you change dose the truck start

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โˆ™ 2011-09-13 06:08:52
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Q: How do you recalibrate the crankshaft sensor after you change the computer on a 1998 Chevy blazer?
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