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knock sensor circuit
I have a 2003 astro that keeps setting a code p0327 for knock sensor bank 1. I replace the knock sensor. I have 4.3volts on both the gray & dk blue wires at the knock sensor with the sensor unpluged or plug in. I have the same voltage right out of the pcm. I o... Login to read more. 
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| Engine | 4.3 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
2003 Chevrolet Astro LT 4.3L
| Engine | 4.3 L |
| Trans | 4-speed Automatic (Electronic) |
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