Noise coming from under my 2004 Chevy trailblazer

Asked by May 09, 2017 at 01:54 PM about the 2004 Chevrolet TrailBlazer EXT LT SUV

Question type: Maintenance & Repair

Hi I have a 2004 Chevy trail blazer
underneath you can hear like a
raddleing noise and now if I start my
truck u can hear like a knock like
something is lifting up and dropping
and it will stop after that one knock
please help it's driving me crazy

1 Answer


It could be a number of things however my first thought would be the exhaust system. They tend to rattle after years of use, and sometimes the connections do corrode and loosen. The reason it may stop after sometime is because the exhaust system gets very hot and the metal expands, stopping the rattling. To be sure, I would run it by Midas or some other reputable shop and just ask them to take a look. Usually there is no charge. Best of luck!

1 of 1 people found this helpful.

Your Answer

Chevrolet TrailBlazer EXT Experts

  • #1
  • #2
    John Carson
  • #3
View All

Related Models For Sale

Used Chevrolet TrailBlazer
79 Great Deals out of 4,555 listings starting at $1,300
Used Chevrolet Tahoe
743 Great Deals out of 41,772 listings starting at $1,995
Used Ford Explorer
941 Great Deals out of 69,236 listings starting at $1,295
Used GMC Envoy XL
8 Great Deals out of 682 listings starting at $2,795
Used Chevrolet Suburban
369 Great Deals out of 22,957 listings starting at $1,999
Used Chevrolet Equinox
986 Great Deals out of 61,239 listings starting at $1,500
Used GMC Envoy
54 Great Deals out of 2,181 listings starting at $1,700
Used Chevrolet Silverado 1500
2,281 Great Deals out of 169,700 listings starting at $1,000
Used Chevrolet Blazer
3 Great Deals out of 1,061 listings starting at $950
Used Dodge Durango
268 Great Deals out of 22,905 listings starting at $895
Used Jeep Grand Cherokee
851 Great Deals out of 70,620 listings starting at $700
Used Chevrolet Avalanche
189 Great Deals out of 5,124 listings starting at $2,494
Used GMC Yukon
473 Great Deals out of 22,284 listings starting at $1,995

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.