97 Jimmy rumbling noise at idle


Asked by Jan 19, 2014 at 08:55 PM about the 1997 GMC Jimmy 4 Dr SLT 4WD SUV

Question type: Maintenance & Repair

My 97 Jimmy has a couple of issues that have all occurred at the same time so I'm
assuming they're related in some way. At first there was a low rumble from under the
vehicle. It went away then started again but only when in park. While in drive or reverse
it would stop. Now with the addition of a rather rough idle the rumbling noise has
increased in volume audible both inside and outside the vehicle and now the rumble can
now be felt throughout the vehicles floor, and into the steering wheel. It goes away by
simply increasing the throttle by about 100-200 RPM. Also on occasion a very similar
noise can be heard coming from seemingly under the dash panel by the defrost vents.
I've never encountered anything like this so I have no idea where to even start.

3 Answers

I'm suspecting the EGR is partially open all the time because it's full of carbon and unburned residue~ pull it off and clean it with a little carb cleaner and small brush~ test it to make sure the electricals are good on it~ https://www.google.com/#q=97+Jimmy+EGR+valve&tbm=shop

it's purpose in life is to re-introduce inert gas (exhaust gas) back into the intake upon deceleration and when combustion temperatures are getting too hot~ (for aluminum heads for example)~ when it's stuck open you're getting mostly inert gas causing not to run properly~


Possibly a resonator or converter coming apart inside the exhaust or cracked flywheel

Your Answer


Looking for a Used Jimmy in your area?

CarGurus has 153 nationwide Jimmy listings and the tools to find you a great deal.


GMC Jimmy Experts

  • #1
    Andrew Olsen
  • #2
  • #3
View All

Related Models For Sale

Used Chevrolet Blazer
731 listings starting at $900
Used GMC Sierra 1500
877 Great Deals out of 59,609 listings starting at $1,980
Used GMC Yukon
375 Great Deals out of 19,007 listings starting at $2,500
Used Chevrolet Tahoe
590 Great Deals out of 37,467 listings starting at $1,699
Used GMC Envoy
29 Great Deals out of 1,498 listings starting at $1,800
Used Ford Bronco
212 listings
Used Jeep Cherokee
275 Great Deals out of 65,698 listings starting at $2,995
Used Chevrolet S-10
8 Great Deals out of 995 listings starting at $999
Used GMC Sonoma
333 listings starting at $2,150
Used Jeep Grand Cherokee
843 Great Deals out of 74,143 listings starting at $500
Used Ford F-150
2,521 Great Deals out of 220,358 listings starting at $1,222

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.