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P0332 code on 2002 chevy 3/4 ton- spark knock?

Discussion in 'Chevy Trucks' started by turbo5560, Sep 18, 2008.

  1. turbo5560

    turbo5560 Senior Member
    Messages: 285

    so i got the code P0332 on the truck today. I cleared the code then drove about 50 miles and came back on. I have a hypertech programmer other than that nothing. I called a friend and he said the code was something about knock sensor. Any help on what i need to do? I cleared the code a second time as well as took the programmer off the truck. These little things bug the piss out of me.
    Thanks in advance!
     
  2. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    P0332 is a knock sensor issue.

    6.0 equipped truck?

    Do you wash it under the hood with water from time to time?
     
  3. ChevKid03

    ChevKid03 Senior Member
    Messages: 505

    The back knock sensor is probably the one giving you the issue. I just got done doing my second one. I did both of mine last year when I got the code and just recently a friends that didn't want to spend the $800 at the dealership. If you are mechanically inclined and have some tools you can do the job yourself for about $150. That includes two new knock sensors and an intake manifold gasket.

    What happens is that water gets under the plastic intake manifold and goes into the back bank for the knock sensors. The bank fills with water over time and turns the knock sensor into something you thought you'd find on the bottom of the ocean.

    If you do the repair yourself, be sure to remove the foam pads at the front and rear of the intake manifold and build a "dam" with an opening towards the back of each bank to direct water away from the holes.
     
  4. brad96z28

    brad96z28 PlowSite.com Addict
    Messages: 1,526

    The rear knock sensor is probally swimming. Easy job follow instructions per tsb exactly what chevy kid said. I always replace the knock sensor connector. as well.
     
  5. turbo5560

    turbo5560 Senior Member
    Messages: 285

    so i took the programmer off and it hasn't come back on yet. should i just wait to see if it comes on again or is it something that should be fixed asap?
     
  6. brad96z28

    brad96z28 PlowSite.com Addict
    Messages: 1,526

    Thats up to u. Id fix it now. It wont get u stranded, but spark knock is never a good thing to have. Its really not a bad job at all.
     
  7. turbo5560

    turbo5560 Senior Member
    Messages: 285

    so i took the programmer off my truck about a week and a half ago and now i have not had a code since. think they could be related?
     
  8. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Absolutely. If the programmer falsifies timing commands too far out of scale the PCM will interpret it as a faulty sensor reading...it can basically "read" that the spec is out of range thus setting a code.
     
  9. turbo5560

    turbo5560 Senior Member
    Messages: 285

    i have had this hypertech programmer on there for about 6 months and no problems until a week or so ago. Think it's not worth putting it back on there? At least in your personal opinion.
     
  10. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    If you've some reading here in the Chevy forums lately you'll see I'm not a fan of the off the shelf hand held programmers, so my opinion might be a little biased. :D

    Ditch the programmer and go with a custom tune if you want power over stock. :nod:
     
  11. turbo5560

    turbo5560 Senior Member
    Messages: 285

    no your good. i asked for your opinion.
    thanks!
    as far as custom programs, i've heard about them but whats the best way about getting one?
     
  12. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Very easy procedure turbo.

    Just call them up and give them all your truck specific info over the phone..they'll burn you a new PCM and mail it out to you ready to install. You then send your old PCM back for a core refund. No downtime that way. And most of the big guys have excellent tech support after the sale if it ever becomes necessary.