How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Michael Moore Your Own Question
Michael Moore
Category: Chevy
Satisfied Customers: 2956
Experience:  ASE Master/GM WORLD CLASS/GM Master/GM ASEP/Dodge Gold/Mazda cert.
Type Your Chevy Question Here...
Michael Moore is online now
A new question is answered every 9 seconds

2002 Chevy Avalanche Z71 4x4, Service Engine Soon light illuminated.

This answer was rated:

2002 Chevy Avalanche Z71 4x4, Service Engine Soon light illuminated. Auto Zone code is P0332. Purchased 1 x Knock Sensor. Kid told me he thought it was on engine block located just above oil pan. I seem to find it is on top of engine below intake manifold. Is this something I can replace easily?
Yes you can remove the intake. It has about 10 small bolts, some eletrical connectors and you have to disconnect the fuel lines. Its best to replace both knock sensors, there are 2. They are both under the intake, there is a short wiring harness going to them, they have rubber plugs covering the sensors. Most common failure for these sensors is moisture gets under these plugs and rust out the sensor and connector. Make sure the connector going to the nock sensor is not rusted. If they are, then you have to replace the harness. Your local dealership will have the harness. If the harness s good, replace the sensors and use engine sealant to seal the rubber plugs to keep moisture out.
You will need to replace the intake gaskets when you remove the intake as well.

Object Number: 642285  Size: SH

Object Number: 54608  Size: SH

Object Number: 54612  Size: SH
Michael Moore and other Chevy Specialists are ready to help you

Related Chevy Questions