High Pitch Squeak When Accelerating Over 2000rpm on Pontiac Grand Prix SE 2002 3.1L

Asked by Jan 28, 2016 at 10:43 PM about the 2002 Pontiac Grand Prix SE

Question type: Maintenance & Repair

Hello, my Pontiac Grand Prix SE 2002 3.1 squeaks (high pitch) really bad when
I accelerate above 2000 RPM, if you leave the gas pressed, it keeps doing it
and it doesn't go away, it only goes away when I don't step on the gas pedal.
The noise comes from the driver side, apparently from the throttle body
section. I attach photo of where it's exactly coming from.

The water pump, belt tensioner and belt got recently replaced.

Does anybody know what is going on?

Thank you

1 Answer


I'd check the big air intake hose first. Make sure it's securely attached to the throttle body. Check that hard plastic hose that plugs into the air intake hose (PCV System fresh air intake hose). The round metal "can" looking thing at the top right of the circled area with GM 12564563 on top of it is the EGR (Exhaust Gas Recirculation) valve. It may be sucking air due to a bad mounting gasket. Lastly, inspect the vacuum hoses in that area. Make sure none are damaged or disconnected. HTH. -Jim

1 of 1 people found this helpful.

Your Answer

Pontiac Grand Prix Experts

  • #1
  • #2
    Tom Demyan
  • #3
View All

Related Models For Sale

Used Chevrolet Impala
507 Great Deals out of 32,641 listings starting at $1,000
Used Pontiac Bonneville
5 Great Deals out of 403 listings starting at $1,995
Used Chevrolet Monte Carlo
8 Great Deals out of 1,174 listings starting at $1,125
Used Pontiac Grand Am
953 listings
Used Chevrolet Camaro
424 Great Deals out of 31,673 listings starting at $3,495
Used Ford Mustang
340 Great Deals out of 42,823 listings starting at $1,488
Used Chevrolet Malibu
1,080 Great Deals out of 54,838 listings starting at $1,250
Used Pontiac Firebird
9 Great Deals out of 695 listings starting at $2,850
Used Jeep Grand Cherokee
900 Great Deals out of 71,642 listings starting at $950
Used Nissan Maxima
347 Great Deals out of 21,016 listings starting at $1,175

Used Cars For Sale

2008 Pontiac Grand Prix For Sale
10 Great Deals out of 399 listings starting at $1,900
2007 Pontiac Grand Prix For Sale
336 listings starting at $4,499
2006 Pontiac Grand Prix For Sale
3 Great Deals out of 440 listings starting at $4,000
2005 Pontiac Grand Prix For Sale
325 listings starting at $3,000

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.