GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 4 of 4
  1. #1
    Master Mechanic
    KyleZ71's Avatar
    Join Date
    Jun 2010
    Location
    York and Wilkes Barre, PA
    Posts
    855

    Default Knock Sensor Troubles

    Hey everybody sorry for posting this as a new post now, but this is very troubling and I would rather not take it to the garage and spend a fortune.

    When I was up at Gettysburg being line security for the 150th, on the way home I got two check engine lights
    P0332 - Knock Sensor 2 Circuit Low Input (bank 2)
    P0101 Mass or Volume Air Flow Circuit Range/ Performance

    I'm a about 99% sure the P0101 is a dirty Mass Air Flow Sensor, which I can clean no problem. The one that I am confused about is the P0332. Right after the codes, I cleaned the intake manifold and replaced both knock sensors with brand new ones. After clearing the codes and about 50 miles later the codes are back. Later I cleared the code, and disconnected the negative terminal for a few minutes but it's still there.

    The truck is REALLY hurting in the low rpms for power, as it VERY sluggish when I try to pull out quickly. Could it be that I got "bad" new knock sensor or something more serious?


    - - - Updated - - -

    Could it be I need a new knock sensor sub-harness?? Just throwing out ideas.

    - - - Updated - - -

    I run Sunocco 93 so I know I'm running good gas. The truck doesn't seem knocking to me so what do you guys think?
    Bad replacement sensor? Need new knock sensor sub harness? Something more serious?
    Objects in mirror are losing

    2003 Chevy Silverado Z71, 5.3L, K&N 57 series, 2.5'' Flowmaster Super 10 series dual exhaust , Corvette Servo, McNew Automotive Dyno tune, SS gauge cluster, Extang Trifecta Tonneau, Pacesetter shorty headers, Goodmark cowl hood, Sony Xplod speakers, Kenwood DDX-470 exhaust tips, 16" Ultra Badlands polished wheels, Pirelli Scorpion ATR .

  2. #2
    Master Mechanic
    KyleZ71's Avatar
    Join Date
    Jun 2010
    Location
    York and Wilkes Barre, PA
    Posts
    855

    Default

    bump, sorry for being annoying
    Objects in mirror are losing

    2003 Chevy Silverado Z71, 5.3L, K&N 57 series, 2.5'' Flowmaster Super 10 series dual exhaust , Corvette Servo, McNew Automotive Dyno tune, SS gauge cluster, Extang Trifecta Tonneau, Pacesetter shorty headers, Goodmark cowl hood, Sony Xplod speakers, Kenwood DDX-470 exhaust tips, 16" Ultra Badlands polished wheels, Pirelli Scorpion ATR .

  3. #3

    Default

    Kyle, you need to check the reference voltage at the sensor. It should be around 5 volts with engine running (it may be there with key on and engine not running as well).

    If there is no voltage, you may have a broken/dirty wiring connection.
    Ray

    '09 Avalanche LTZ - Black
    '05 Envoy XL (sold)

  4. #4
    Master Mechanic
    KyleZ71's Avatar
    Join Date
    Jun 2010
    Location
    York and Wilkes Barre, PA
    Posts
    855

    Default

    Tomorrow I plan on replacing the knock sensor sub harness, will most likely check it then. Thank you
    Objects in mirror are losing

    2003 Chevy Silverado Z71, 5.3L, K&N 57 series, 2.5'' Flowmaster Super 10 series dual exhaust , Corvette Servo, McNew Automotive Dyno tune, SS gauge cluster, Extang Trifecta Tonneau, Pacesetter shorty headers, Goodmark cowl hood, Sony Xplod speakers, Kenwood DDX-470 exhaust tips, 16" Ultra Badlands polished wheels, Pirelli Scorpion ATR .

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •