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- 2nd Generation S-series (1995-2005) Tech (https://blazerforum.com/forum/2nd-generation-s-series-1995-2005-tech-41/)

- - knock sensor (https://blazerforum.com/forum/2nd-generation-s-series-1995-2005-tech-41/knock-sensor-51273/)

tny37mo

11-07-2010 10:08 AM

knock sensor

Recently bought a 2001 4.3 vortec motor that came out of a chevy s10 blazer. I am putting it in my 1999 s10 blazer, but noticed the knock sensor's are different in thread size and also the 1999 has 1 wire and the 2001 has 2 wires. Can this problem be fixed?

swartlkk

11-07-2010 01:40 PM

Drill/tap the block out to 1/4" NPT. This will allow you to use the older style knock sensor.

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