just got an 06 cobalt. my check engine light came on, took it to advance auto parts to see whats wrong with it, they told me it was a knock sensor. than that same day the check engine light went off and hasnt been on since. should i still take it to a garage to get checked out? or was something maybe just knocked loose while driving that its fine now? how serious of a problem is a knock sensor?

Asked by Feb 28, 2013 at 02:32 AM about the 2006 Chevrolet Cobalt

Question type: Maintenance & Repair

2 Answers


A knock sensor retards the timing when the engine is knocking. Even if you can not hear the knocks, they are doing damage to the engine. The sensor may be on it's way out or perhaps it was a loose connector. I would clean and coat the electrical connector with dielectric grease.


it could be your gas cap be sure that it is tight or replace with another if that happens again and drive 50 to 100 miles and the light should go off

Your Answer

Chevrolet Cobalt Experts

  • #1
  • #2
  • #3
View All

Related Models For Sale

Used Chevrolet Malibu
581 Great Deals out of 47,926 listings starting at $1,500
Used Honda Civic
362 Great Deals out of 50,912 listings starting at $1,200
Used Ford Focus
363 Great Deals out of 69,633 listings starting at $999
Used Chevrolet Impala
363 Great Deals out of 27,127 listings starting at $1,000
Used Ford Mustang
278 Great Deals out of 38,263 listings starting at $1,995
Used Honda Accord
539 Great Deals out of 91,748 listings starting at $1,495
Used Toyota Corolla
663 Great Deals out of 65,393 listings starting at $1,599
Used Dodge Charger
240 Great Deals out of 32,992 listings starting at $495
Used Toyota Camry
802 Great Deals out of 70,728 listings starting at $1,112
Used Chevrolet Cavalier
630 listings starting at $999
Used Chevrolet Silverado 1500
2,171 Great Deals out of 149,980 listings starting at $1,499
Used Pontiac G6
27 Great Deals out of 2,860 listings starting at $699

Used Cars For Sale

2010 Chevrolet Cobalt For Sale
4 Great Deals out of 474 listings starting at $2,950
2009 Chevrolet Cobalt For Sale
483 listings starting at $2,200
2008 Chevrolet Cobalt For Sale
482 listings starting at $2,995
2007 Chevrolet Cobalt For Sale
490 listings starting at $2,995
2006 Chevrolet Cobalt For Sale
531 listings starting at $2,000

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.