2002 Chevy Silverado

Tiny
KRISSEPTEMBER
  • MEMBER
  • 2002 CHEVROLET SILVERADO
2002 Chevy Silverado V8 Four Wheel Drive Automatic

i got a code of PO327 & PO332. I replaced both knock sensors, pcm, jumper harness, & made new wiring & terminals from the pcm to jumper harness. What else can I do? Silverado 2002 z71
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Wednesday, January 21st, 2009 AT 11:12 AM

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Tiny
RHALL77
  • EXPERT
What do you mean by jumper harness. Check and make sure your terminal tension is good at the connectors you made. Is it still setting these codes.
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Wednesday, January 21st, 2009 AT 6:03 PM
Tiny
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The jumper harness is a small harness that connects to the knock sensors to the main engine harness.

All the terminals are new & have the correct amount of tension.

It has a cold air intake installed on it. Could that cause any issues?

It has an 11 inch lift also.
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Thursday, January 22nd, 2009 AT 12:54 PM
Tiny
RHALL77
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Yes anything aftermarket can cause it. Take it back to factory and see if it fixes the problem. (Just the cold air intake)
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Thursday, January 22nd, 2009 AT 5:26 PM

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