Loud knocking noise

10

Asked by Jun 10, 2017 at 06:40 AM about the 2000 Chevrolet Tahoe Z71 4WD

Question type: Maintenance & Repair

My tahoe has a bad knocking noise when it
runs & even when I turn the key on we've
changed the oil,spark plugs it dosen't seem
to be overheating or anything I been told it
could lifters or something with the oil pan
I'm not familiar with any of that I stopped
driving it because of the knocking. Could
more damage be done if I decide to drive it
or should I just leave it until we find out
where the noise is coming from??

6 Answers

87,125

A knocking noise is not good. Usually a rod knock indicating worn bearings on the crankshaft and push rods that drive the pistons. You definitely would cause more damage to the engine, be stranded somewhere when the engine throws a rod. So do not be driving it. The motor needs to be rebuilt or replaced.

2 people found this helpful.
10

Thank yu ^^^ your answer is most helpful I'll definitely do some research and learn how these auto parts work & such.. again thx

1 people found this helpful.
81,395

Could be a worn camshaft. A GM trouble spot! Definitely not worth fixing on a 17 year old vehicle. HTH. -Jim

10

My Tahoe did this, and EVERYBODY AND THEIR BROTHERS said I needed to replace/repair engine!! It ran too good for that. It turned out a heat shield was loose, and made a racket like a rod knockin...Had even one mechanic that said he felt the #7... All you do is take them loose, from the exhaust close to engine, and probably one piece at a time. Do this while the engine is cold. Overnight cold.

1 people found this helpful.
55

chip Kemp what you're saying sound like my situation. I notice a suction noise and ticking from the manifold area when driving and it does not tap while sitting idling the motor is still strong spunky with great oil pressure if I change the oil at 3,000 -3,500 it burns no oil in between. I had plan on taking it in to get the manifold gasket replace but needed to figure out if i had motor issues first now that i have some insight on it i'll get the manifold and heat shield replaced or repaired Thanks for the Info.

My 07 tahoe knocks after i drive ot for a nout 15 minutes could it be the termostat imhear only on knocking nosie not all pistons or what eber is just one single knockin, what could it be ? Does anyone habe the same issue

Your Answer:

Tahoe

Looking for a Used Tahoe in your area?

CarGurus has 37,633 nationwide Tahoe listings starting at $1,950.

ZIP:

Chevrolet Tahoe Experts

  • #1
    John Carson
    Reputation
    1,030
  • #2
    Tom Demyan
    Reputation
    1,010
  • #3
    Rowefast
    Reputation
    980
View All

Related Models For Sale

Used GMC Yukon
325 Great Deals out of 23,705 listings starting at $2,000
Used Chevrolet Suburban
290 Great Deals out of 21,266 listings starting at $1,950
Used Cadillac Escalade
255 Great Deals out of 11,922 listings starting at $2,990
Used Chevrolet Silverado 1500
1,847 Great Deals out of 155,720 listings starting at $1,490
Used Ford Expedition
375 Great Deals out of 21,011 listings starting at $1,900
Used GMC Yukon XL
185 Great Deals out of 13,345 listings starting at $1,850
Used Jeep Grand Cherokee
1,164 Great Deals out of 79,945 listings starting at $1,500
Used Ford Explorer
914 Great Deals out of 69,308 listings starting at $495
Used Dodge Durango
344 Great Deals out of 25,841 listings starting at $1,000
Used GMC Sierra 1500
652 Great Deals out of 56,443 listings starting at $888
Used Toyota 4Runner
266 Great Deals out of 32,942 listings starting at $1,900
Used Ford F-150
2,258 Great Deals out of 183,135 listings starting at $1,200

Used Cars For Sale

2018 Chevrolet Tahoe For Sale
85 Great Deals out of 20,073 listings starting at $35,295
2017 Chevrolet Tahoe For Sale
51 Great Deals out of 2,676 listings starting at $29,997
2016 Chevrolet Tahoe For Sale
27 Great Deals out of 1,118 listings starting at $27,962
2015 Chevrolet Tahoe For Sale
73 Great Deals out of 3,105 listings starting at $16,795
2014 Chevrolet Tahoe For Sale
26 Great Deals out of 563 listings starting at $12,995

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.