The check engine light will not turn off

Asked by May 13, 2017 at 11:30 PM about the 2004 Chevrolet Silverado 1500 Z71 Ext Cab Short Bed 4WD

Question type: Maintenance & Repair

I recently installed both knock sensors and harness on my 2004 Silverado
because I was getting a code that indicated that these were defective. But
after replacing them, I still getting the same code. I already rechecked the
wiring all the way to the computer and found everything to be ok. I don't know
what else to do, could it be a timing issue? I did replace the 5.3 with a 6.0 but I
I think the issue was there before I replaced the engine.

3 Answers

254,025

A lot of times, the code that pops up indicating which sensor is detecting the problem is not the issue. You need to do further diagnostic work. So what are the 4 digit code or codes you have now?

1 of 1 people found this helpful.

Thanks Tom.... I have attached a photo with the codes that I am getting. I do plan on running some more test to the best of my unprofessional experience. I have also checked all of the grounding points that I have found. Hopefully you have some more tips, if not I will have to take it in to the dealership and suffer the expense. Thanks Tom

254,025

https://www.youtube.com/watch?v=oPd6oPxlc3A

Your Answer

Silverado 1500

Looking for a Used Silverado 1500 in your area?

CarGurus has 167,326 nationwide Silverado 1500 listings starting at $1,888.

ZIP:

Chevrolet Silverado 1500 Experts

  • #1
    John Carson
    Reputation
    2,480
  • #2
    Rowefast
    Reputation
    1,980
  • #3
    Andrew Olsen
    Reputation
    1,700
View All

Related Models For Sale

Used GMC Sierra 1500
874 Great Deals out of 65,537 listings starting at $1,500
Used Ford F-150
2,246 Great Deals out of 179,996 listings starting at $1,300
Used Chevrolet Silverado 2500HD
321 Great Deals out of 29,006 listings starting at $2,000
Used Dodge Ram 1500
355 Great Deals out of 10,813 listings starting at $1,199
Used Toyota Tundra
478 Great Deals out of 31,847 listings starting at $1,999
Used Toyota Tacoma
594 Great Deals out of 42,094 listings starting at $1,995
Used Chevrolet Tahoe
658 Great Deals out of 39,224 listings starting at $1,000
Used Chevrolet Colorado
248 Great Deals out of 30,985 listings starting at $2,495
Used Ford F-250 Super Duty
378 Great Deals out of 43,934 listings starting at $2,400
Used Chevrolet Silverado 1500HD
13 Great Deals out of 277 listings starting at $3,495
Used Chevrolet Silverado 2500
6 Great Deals out of 253 listings starting at $2,900
Used GMC Sierra 2500HD
96 Great Deals out of 13,409 listings starting at $2,999
Used Ford Mustang
712 Great Deals out of 38,398 listings starting at $895

Used Cars For Sale

2017 Chevrolet Silverado 1500 For Sale
196 Great Deals out of 77,620 listings starting at $20,998
2016 Chevrolet Silverado 1500 For Sale
216 Great Deals out of 6,523 listings starting at $17,422
2015 Chevrolet Silverado 1500 For Sale
326 Great Deals out of 10,660 listings starting at $12,950
2014 Chevrolet Silverado 1500 For Sale
330 Great Deals out of 12,976 listings starting at $9,500
2013 Chevrolet Silverado 1500 For Sale
185 Great Deals out of 5,233 listings starting at $6,995

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.