1998 Silverado knocking on startup

Asked by Karterblaze Dec 02, 2017 at 09:58 AM about the 1998 Chevrolet C/K 1500 Silverado Extended Cab RWD

Question type: Maintenance & Repair

My 1998 Silverado 350 5.7L is knocking maybe
3sec on start up everytime unless the truck has
been parked for hours. Go to the store park come
back crank up, knocking again (at the most 3sec).
Stop to get gas, finish, crank up and knocking
again. The truck had 240k miles, but is very very
dependable. I can literally go any place that has
roads to it. I’m now using 10/30 penzoil. What is the
cause if this knock? which is getting louder

3 Answers
38,885

beatupchevy answered 6 years ago

I have a similar problem with a 94 , since the cold whether , joining this thread to see if you find a solution

3 people found this helpful.
Mark helpful
40

HooFlungDung answered 6 years ago

It’s possible the bearings have some slop going on. Had similar issues in my 96 a few years back. Noticed when I was changing the pan gasket that the crank was actually sliding back and forth on the journal and the bottom of the piston rod was actually smacking against the crank lobe. It only did it during start up like you described. Probly time to look into a freshen up or overhaul. Motor had close to 200k mikes at the time. Overhauled mine. Motor now has over 330k miles and still sting as ever

1 people found this helpful.
Mark helpful

Your Answer:

Related Questions

  • 1998 Silverado knocking on startup 3 Answers

    My 1998 Silverado 350 5.7L is knocking maybe 3sec on start up everytime unless the truck has been parked for hours. Go to the store park come back crank up, knocking again (at the most 3sec). Stop...

    1998 Chevrolet C/K 1500 Silverado Extended Cab RWD

    -

    Maintenance & Repair

  • 1998 Silverado k1500 5.7 2 Answers

    1998 silverado k1500 5.7. Will not hold fuel psi in the line. Floods out at idle. Runs fine now other than that.

    1998 Chevrolet C/K 1500

    -

    Maintenance & Repair

  • Speedometer 1998 Chevy Silverado K1500 2 Answers

    I have a 1998 Chevy Silverado K1500. My speedometer needs to read 100 MPH for me to be going 73 MPH on my GPS. How can I calibrate it to be more accurate?

    1998 Chevrolet C/K 1500 Silverado Extended Cab Stepside 4WD

    -

    Maintenance & Repair

  • I have a knocking noise on my 1996 chevy truck. 4 Answers

    It does the knock when the truck is cold and goes away when its warmed up. I changed the oil from a 5w-30 to a 10w-30 and it went away for a while and now it started back up. The truck almost up to ...

    1996 Chevrolet C/K 1500 Cheyenne Extended Cab RWD

    -

    Maintenance & Repair

  • 1998 Chevy Silverado has a drastic drop in mileage that my mechanic and I can't find the reason for 8 Answers

    My '98 Chevy Silverado suddenly dropped 4 to 5 mpg so I had a full tune up with new plugs and wires, changed injector syst., changed O2 sensors, had purge valve cleaned in throttle body, changed fuel ...

    1998 Chevrolet C/K 1500 Cheyenne RWD

    -

    Maintenance & Repair

C/K 1500

Looking for a Used C/K 1500 in your area?

CarGurus has 5 nationwide C/K 1500 listings and the tools to find you a great deal.

Postal Code:

Shortcuts

Search Chevrolet C/K 1500 Questions

CarGurus Experts

  • #1
    Andrew Olsen
    Reputation
    15,750
  • #2
    Rowefast
    Reputation
    9,510
  • #3
    John Saffrahn
    Reputation
    6,430
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 GMC Sierra 1500
143 Great Deals out of 8,222 listings starting at $3,000
Used Ford F-150
325 Great Deals out of 13,693 listings starting at $3,800
Used Chevrolet Silverado 2500HD
25 Great Deals out of 1,696 listings starting at $3,000
Used Chevrolet C/K 2500
2 listings
Used Chevrolet Tahoe
11 Great Deals out of 839 listings starting at $9,980
Used Chevrolet Camaro
17 Great Deals out of 463 listings starting at $11,749
Used Chevrolet S-10
2 listings
Used Chevrolet C/K 3500
1 listing
Used Toyota Tacoma
43 Great Deals out of 730 listings starting at $9,975
Used Dodge RAM 1500
3 Great Deals out of 90 listings starting at $2,500
Used Ford Mustang
39 Great Deals out of 1,657 listings starting at $7,999

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.