Just an update got everything cleaned up and all put back together everything seems to running great if not better. Thanks again all you have been a big help.

oh ya no more check engine light <br>

Alright good deal!!

Sweet! Glad we could help!

i have a 2004 silverado with a 332 code. you will probally find the rear sensor totally rusted and the front in mint condition. it will be best to replace both sensors and the wiring harness. make sure you use only o.e.m. parts not aftermarket. trust me aftermarket parts will not signal correct to your computer. i learned this the hard way. clean the rust completely out of the sensor cavity. if the rubber bottom in the cavity is lost due to cleaning. replace it by squirting in some blue rtv sealant and run around the bottom with your finger.also do not overtighten the knock senser. hand tight and then one quarter turn with rachet. good luck

i have a 2004 silverado with a 332 code. you will probally find the rear sensor totally rusted and the front in mint condition. it will be best to replace both sensors and the wiring harness. make sure you use only o.e.m. parts not aftermarket. trust me aftermarket parts will not signal correct to your computer. i learned this the hard way. clean the rust completely out of the sensor cavity. if the rubber bottom in the cavity is lost due to cleaning. replace it by squirting in some blue rtv sealant and run around the bottom with your finger.also do not overtighten the knock senser. hand tight and then one quarter turn with rachet. good luck

thanks for the infoI already replaced the two sensors and the harness and yes i did use aftermarket parts for far no trouble seems to be working great i wish i knew how to post pictures on here i would show all my pics thank for the input thought

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Tighten the sensor to 20 N·m (15 lb ft).