i have a 2007 avalanche 5.3 flex fuel

150

Asked by Webbfamily Mar 01, 2019 at 05:26 PM about the 2007 Chevrolet Avalanche LT 4WD

Question type: Maintenance & Repair

po301 code up then went out. then the motor started knocking loud. what would
cause this

4 Answers
150

Webbfamily answered 5 years ago

i changed it. but the engine started knocking when that po301 code came on then went off

1 people found this helpful.
Mark helpful
157,415

Bob answered 5 years ago

Did the engine knock before changing the spark plug? If not you may have installed a plug with a reach that was too long causing the piston to hit the sparkplug. Remove the sparkplug and inspect it. Also compare it's reach (the distance from the seat to the end of the threads) with the plug that you replaced.

Mark helpful

Your Answer:

Related Questions

Avalanche

Looking for a Used Avalanche in your area?

CarGurus has 33 nationwide Avalanche listings starting at $6,900.

Postal Code:

Shortcuts

Search Chevrolet Avalanche Questions

CarGurus Experts

  • #1
    sverden
    Reputation
    1,220
  • #2
    Mark Weiner
    Reputation
    570
  • #3
    GuruLW9BX
    Reputation
    530
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Silverado 1500
204 Great Deals out of 8,074 listings starting at $3,000
Used Chevrolet Tahoe
11 Great Deals out of 839 listings starting at $9,980
Used Cadillac Escalade EXT
5 listings starting at $8,900
Used Ford F-150
325 Great Deals out of 13,693 listings starting at $3,800
Used GMC Sierra 1500
143 Great Deals out of 8,222 listings starting at $3,000
Used Chevrolet Colorado
33 Great Deals out of 1,224 listings starting at $4,995
Used Dodge RAM 1500
3 Great Deals out of 90 listings starting at $2,500
Used Toyota Tacoma
43 Great Deals out of 730 listings starting at $9,975
Used Toyota Tundra
47 Great Deals out of 984 listings starting at $9,992
Used Cadillac Escalade
14 Great Deals out of 505 listings starting at $5,931
Used Chevrolet Suburban
9 Great Deals out of 534 listings starting at $10,950
Used GMC Yukon
13 Great Deals out of 972 listings starting at $3,000
Used Chevrolet Silverado 2500HD
25 Great Deals out of 1,696 listings starting at $3,000

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. Content will be removed if CarGurus becomes aware that it violates our policies.