knock sensor chevy 5.3 po327
2003 chevy avalanche has po327 knock sensor. I have had front and rear sensors replaced and the wiring harness too. This was done by a local shop with a good reputation in this area. I still get the same code after 4 start/stop cycles. Does anyone have a suggestion? truck has 50000 miles with engine light/ po327 code]
quick thoughts did you use OEM sensors? Are there any engine noises- ticking, knocking exhaust leak? did you reset the RAM* not the same as clearing codes. Installation is specific - must be torqued, no added sealant. no excessive rust in valley cover area where they mount. with DVOM attached to sensor wire and ground-check for ACvoltage as you tap on eng. Check the wire from sensor to PCM - any voltage- grounded-open? then ohm *RAM or adaptives remove negitive cable for a 10count.