Tapping coming from motor

Asked by Mar 17, 2017 at 10:54 AM about the 2008 Chevrolet Silverado 1500

Question type: Maintenance & Repair

I have some tapping come out of my 2008 Chevy Tahoe (5.3) - notice that
when I 1st start it in morning or after it hasnt been running in while I hear it
but slight, but enough I worry. Yesterday parked in a lot on cell, really didn't
drive the truck but no more than 10 min, parked for another 5 and tapping
got louder. When I am in drive - don't hear it. No engine light on. Checked oil
and good to go. HELP!! My husband was trying to say coming from my
exhaust when it first started and I know for a fact it isn't.

2 Answers

28,965

An exhaust leak can sound like a tapping, try using the technique in this video to determine if that is what's going on: https://www.youtube.com/watch?v=i1AFZQ_dQMA - if you're exhaust checks out okay, try and determine is the tapping is equal to engine RPM or one-half. If it is one-half engine RPM, the tapping is coming from a lifter most likely (the camshaft and valve train spin at half the engine RPM). If it is equal to engine RPM, then tapping may come from a crank or rod bearing or wrist pin, a good mechanic can help you pinpoint just what is tapping and decide from there whether it's worth fixing.

I guess that is a start!! Thank you for the feedback!! I'm really not ready to buy a new truck right now!! lol

Your Answer

Chevrolet Silverado 1500 Experts

  • #1
    John Carson
    Reputation
    2,770
  • #2
    Rowefast
    Reputation
    2,080
  • #3
    Andrew Olsen
    Reputation
    1,810
View All

Related Models For Sale

Used GMC Sierra 1500
1,198 Great Deals out of 64,603 listings starting at $999
Used Ford F-150
3,332 Great Deals out of 221,765 listings starting at $1,200
Used Chevrolet Silverado 2500HD
383 Great Deals out of 30,661 listings starting at $2,995
Used Dodge Ram 1500
428 Great Deals out of 11,102 listings starting at $1,495
Used Toyota Tundra
710 Great Deals out of 34,288 listings starting at $1,500
Used Toyota Tacoma
719 Great Deals out of 45,626 listings starting at $1,000
Used Chevrolet Tahoe
805 Great Deals out of 42,074 listings starting at $1,987
Used Chevrolet Colorado
359 Great Deals out of 38,262 listings starting at $1,595
Used Ford F-250 Super Duty
406 Great Deals out of 49,117 listings starting at $1,899
Used GMC Sierra 2500HD
109 Great Deals out of 14,261 listings starting at $2,799
Used Ford Mustang
606 Great Deals out of 39,402 listings starting at $1,895
Used Dodge Charger
467 Great Deals out of 33,692 listings starting at $1,999

Used Cars For Sale

2018 Chevrolet Silverado 1500 For Sale
21 Great Deals out of 84,742 listings starting at $21,719
2017 Chevrolet Silverado 1500 For Sale
212 Great Deals out of 27,952 listings starting at $16,394
2016 Chevrolet Silverado 1500 For Sale
262 Great Deals out of 6,940 listings starting at $14,997
2015 Chevrolet Silverado 1500 For Sale
507 Great Deals out of 11,975 listings starting at $12,510
2014 Chevrolet Silverado 1500 For Sale
476 Great Deals out of 12,281 listings starting at $9,900

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.