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 3 of 3
  1. #1

    Default Check engine light

    Code p0121... What sensor should I change for this? Someone please help

  2. #2

    Default

    Check this out. If this don't help type p0121 in search in the top right.

    http://www.gmtruckclub.com/forum/sho...#axzz2CJ1pmFMZ
    Tim Walters (Curky)

    Wrangler AT/S 265/70R17 - Trail-FX window vents - Husky fitted splash guards - Silver Star zXe - Leveling kit -

  3. #3

    Default

    Check and make sure all you wires are connected properly

Similar Threads

  1. Check engine light on
    By Indyandy in forum General Chevy & GM Tech Questions
    Replies: 3
    Last Post: 08-21-2011, 09:38 AM
  2. Check engine light on.
    By Andy7 in forum Performance & Fuel
    Replies: 4
    Last Post: 07-16-2010, 01:26 PM
  3. Check engine light came on????
    By vncj96 in forum General Chevy & GM Tech Questions
    Replies: 8
    Last Post: 05-12-2009, 10:27 PM
  4. check engine light????
    By twiggy in forum Chevy Tahoe Forum (GMC Yukon, Cadillac Escalade)
    Replies: 6
    Last Post: 05-08-2009, 09:10 PM
  5. Need Help With Check Engine LIght
    By Jaystahoe in forum GM Powertrain
    Replies: 11
    Last Post: 07-23-2007, 10:11 AM

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
  •