GM Truck Club
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 10 of 10

Hybrid View

  1. #1

    Default 2002 2500 GMC knock sensor

    How hard is it to change a knock sensor on my truck. What do i need to do to remove it? It is sensor #1 bank1. Thank you for any info.

  2. #2

    Join Date
    Sep 2010
    everett, massachusetts


    what is the failure code ? what is the issue ?

  3. #3
    Sr. Mechanic
    Join Date
    Jun 2011
    Tuscaloosa, AL


    Um not sure your code but I had a scan done on mine and the guy at the shop said the intake manifold had to come off. Don't quote me I didn't get around doing it because after about 2 weeks there wasn't a code being thrown anymore.
    2004 GMC Sierra SLT 6.0L 4x4
    UWS Low Profile toolbox 10% tint front and over stock back tint
    AirAid MIT and K&N airfilter
    BlackBear Performance

  4. #4


    I dont remember off the top of my head, but it said sensor 1 bank 1 low voltage. i clear the code and it comes right back on.

  5. #5


    Prob the harness or the tube got water in it and killed the sensor. On all the v8's its in the valley pan below the intake. Dry intake so easy job as long as you unbolt or pinch off the throttle body coolant lines. Pop the intake off and they sit right below in the valley, replace the harness and sensors, silicone the boots that seal the tubes so crap doesnt get in again and put the intake back on. Buy new gaskets for the intake and tb, valve covers and coils stay on so it nice easy.
    01' 1500 LT Z71 ECSB 5.3L
    line-x'd front brush guard with KC Daylighters, 6000k HID lows and highs, rewired highbeams, Trans-go mild shift kit, custom stainless duals, 3500 dually OEM taillights, K&N CAI. Still have OEM fender flairs and leveling kit in boxes waiting for time.

  6. #6


    Thank you for all the info. This forum rocks. Glad I found it.

Similar Threads

  1. Knock Sensor
    By Tom Evans in forum General Chevy & GM Tech Questions
    Replies: 5
    Last: 08-26-2011, 04:43 PM
  2. knock sensor
    By mikemax in forum General Chevy & GM Tech Questions
    Replies: 3
    Last: 07-26-2011, 02:17 PM
  3. Knock Sensor
    By groceryman in forum General Chevy & GM Tech Questions
    Replies: 5
    Last: 06-15-2011, 03:59 PM
  4. Where is knock sensor on 350 TBI?
    By Big6ft6 in forum Chevy Suburban Forum (GMC Yukon XL)
    Replies: 5
    Last: 10-22-2008, 10:19 AM
  5. knock sensor
    By gmcjohnny in forum GM Powertrain
    Replies: 2
    Last: 10-08-2008, 05:43 PM

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