5.3 Knock. NOT Like the usual!

Asked by MattBetts Nov 06, 2019 at 02:15 AM about the 2006 Chevrolet Silverado 1500 1LT Crew Cab 4WD

Question type: Maintenance & Repair

I have a 2006 z71 5.3 (LM7) with 270k miles.
In the last 10k miles ots developed this weird
knock. I'll start the truck and after about 5
mins of driving itll start to knock. After about
5-10mins of knocking itll just go away. I don't
lose power. And it I keep about 45oil pressure
consistently. I've read countless forums and
have never seen this problem discussed.  
PLEASE HELP!

2 Answers

Guru9MYSBX answered about a year ago

It's more likely a piston slap they called it in the old days. Piston ware. shrinks when it cools down. or cylinder out of round. when the engine warms up, tightens it up enough so it comes back close to specs. I would assume your using some oil.

Mark helpful

Your Answer:

Related Questions

  • 5.3 Knock. NOT Like the usual! 2 Answers

    I have a 2006 z71 5.3 (LM7) with 270k miles. In the last 10k miles ots developed this weird knock. I'll start the truck and after about 5 mins of driving itll start to knock. After about 5-10mins ...

    2006 Chevrolet Silverado 1500 1LT Crew Cab 4WD

    -

    Maintenance & Repair

  • 5.3 engine loud tick/ knock 6 Answers

    I have a 2012chevy Silverado 4x4 5.3 flex fuel it just turned over 118,000 miles The engine has ran fine and has never used any oil at all, and the oil has been changed every 5000 miles since its bee...

    2012 Chevrolet Silverado 1500

    -

    Maintenance & Repair

  • 03 Silverado 5.3 motor knock/oil issue? Need help 1 Answer

    When I crank my 03 Silverado 5.3 up, especially a cold start, the motor knocks and it slowly goes away until the motor is warmed up some, sometimes it will only knock for about 1-3 seconds after s...

    2003 Chevrolet Silverado 1500 LS Extended Cab RWD

    -

    Maintenance & Repair

  • 2001 sliverado 1500 5.3 starter clicks rapidly and does not engage the ring gear. Installed new starter got same issue 5 Answers

    my 2001 Silverado 5.3 would not start but made a rapid clicking sound from starter/solenoid. I replaced the unit, inspected the cables and connections and charged the battery. I still have the same pr...

    2001 Chevrolet Silverado 1500 LS Extended Cab RWD

    -

    Maintenance & Repair

  • 2008 chevy 5.3 not staying running? 1 Answer

    Truck was running rough and it sat since last april I decided to pull out fuel pump and clean it also fuel pump is a year and a half old but the inlet was clogged and a few other things were in the...

    2008 Chevrolet Silverado 1500 1LT Extended Cab 4WD

    -

    Maintenance & Repair

Own this car?

Share your experience with others.

2006 Chevrolet Silverado 1500

Write a car review

Review another car

Shortcuts

Search Chevrolet Silverado 1500 Questions

CarGurus Experts

  • #1
    Rowefast
    Reputation
    10,410
  • #2
    John Carson
    Reputation
    9,580
  • #3
    Andrew Olsen
    Reputation
    9,500
View All

Know more, shop wisely

Search

Related Models For Sale

Used GMC Sierra 1500
1,937 Great Deals out of 67,237 listings starting at $3,400
Used Ford F-150
6,073 Great Deals out of 134,779 listings starting at $1,500
Used Chevrolet Silverado 2500HD
1,038 Great Deals out of 30,965 listings starting at $3,800
Used Toyota Tundra
1,127 Great Deals out of 33,997 listings starting at $3,399
Used Dodge RAM 1500
79 Great Deals out of 1,600 listings starting at $1,999
Used Toyota Tacoma
1,988 Great Deals out of 33,738 listings starting at $2,990
Used Chevrolet Tahoe
1,098 Great Deals out of 22,040 listings starting at $2,000
Used Chevrolet Colorado
967 Great Deals out of 23,717 listings starting at $3,995
Used GMC Sierra 2500HD
570 Great Deals out of 21,171 listings starting at $5,995
Used Ford F-250 Super Duty
1,390 Great Deals out of 43,401 listings starting at $2,995
Used Dodge Charger
775 Great Deals out of 27,141 listings starting at $1,995
Used Ford Mustang
903 Great Deals out of 22,404 listings starting at $2,000

Used Cars for Sale

2024 Chevrolet Silverado 1500 For Sale
146 Great Deals out of 80,324 listings starting at $27,305
2023 Chevrolet Silverado 1500 For Sale
525 Great Deals out of 9,159 listings starting at $26,870
2022 Chevrolet Silverado 1500 For Sale
541 Great Deals out of 6,740 listings starting at $22,300
2021 Chevrolet Silverado 1500 For Sale
551 Great Deals out of 7,852 listings starting at $14,995
2020 Chevrolet Silverado 1500 For Sale
406 Great Deals out of 4,885 listings starting at $14,998

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.