Knocking noise or exhaust leak

Asked by Jul 18, 2017 at 05:39 AM about the 2008 Chevrolet Silverado 1500 LT1 4WD

Question type: Maintenance & Repair

So I have a 2008 Silverado 6.0 v8 around 160k
miles. I recently changed the oil in it using 5w-30
synthetic high mileage oil. I also discovered a small
hole in the exhaust pipe. So I changed the oil in the
truck...2 days later I patch the hole in the exhaust
everything is fine until I drive about 40 miles.
Whenever I get to about 40 miles I hear a small
ticking/knocking noise and it's annoying. And when
I come to a stop my truck sounds bad, like a diesel
almost just idling. But after the truck cools and sits
for a while and I start it up and drive short distant
everything is fine. No knocking, truck sounds good.
Only after I've been driving awhile will the noise
appear and sometimes will even go away like the
truck fixed itself. Also my engine light came on the
same day that I patched the hole in the exhaust.
Took it to autozone and th readings came back that
my oil pressure sensor needed repair and to
reprogram ecu sensors. Confused and need help
trying to pinpoint what's going on

2 Answers

251,315

Ticking can be an indication of an exhaust leak which could trip the CEL to come on. Have your exhaust inspected first.

Gotta be something with the oil. Oil pressure light will flash on for 5 seconds and turn back off. Checked oil and got plenty of oil in it. How do I fix it

Your Answer

Chevrolet Silverado 1500 Experts

  • #1
    John Carson
    Reputation
    2,460
  • #2
    Rowefast
    Reputation
    1,960
  • #3
    Andrew Olsen
    Reputation
    1,670
View All

Related Models For Sale

Used GMC Sierra 1500
229 Great Deals out of 10,465 listings starting at $2,995
Used Ford F-150
458 Great Deals out of 9,070 listings starting at $922
Used Dodge Ram 1500
60 Great Deals out of 528 listings starting at $2,995
Used Chevrolet Silverado 2500HD
12 Great Deals out of 804 listings starting at $5,995
Used Toyota Tundra
16 Great Deals out of 789 listings starting at $3,999
Used Toyota Tacoma
30 Great Deals out of 789 listings starting at $5,995
Used Chevrolet Tahoe
5 Great Deals out of 640 listings starting at $6,871
Used Chevrolet Colorado
14 Great Deals out of 1,319 listings starting at $1,999
Used Ford F-250 Super Duty
16 Great Deals out of 784 listings starting at $3,000
Used Ford Mustang
9 Great Deals out of 1,178 listings starting at $3,350
Used Dodge Charger
76 Great Deals out of 811 listings starting at $1,999

Used Cars For Sale

2017 Chevrolet Silverado 1500 For Sale
14 Great Deals out of 7,418 listings starting at $100
2016 Chevrolet Silverado 1500 For Sale
19 Great Deals out of 185 listings starting at $22,980
2015 Chevrolet Silverado 1500 For Sale
44 Great Deals out of 442 listings starting at $22,470
2014 Chevrolet Silverado 1500 For Sale
30 Great Deals out of 403 listings starting at $18,204
2013 Chevrolet Silverado 1500 For Sale
21 Great Deals out of 194 listings starting at $12,980

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.