2003 Pontiac Grand Prix GT jerking 2nd to 3rd

Asked by Jsh83 Oct 14, 2017 at 04:25 PM about the 2003 Pontiac Grand Prix GT

Question type: Maintenance & Repair

This has been happening in the same place in my
commute for the last few days. I  get off the
backroads and accelerating to around the 45mph
area, it feels like the transmission is slipping. It
jerks and shudders, then the Trac Off light comes
on. I pull over and let it sit for a minute and usually
it behaves the rest of the way. No trouble on
freeways or under 40mph on backroads. I put
some Slip Fix in it to no avail. Mom thinks it's my
timing chain. Dad thinks it's a misfire. I did check
each wire on the coils and there's spark all around.
This is my $200 car and I don't want to spend a ton
to fix or diagnose it. Thoughts?

1 Answer
18,285

munron answered 6 years ago

Could be worn out plugs. They last so long these days they sometimes don't get changed at all. Just changed out original plugs on an '03 Grand Prix with 125,000!! miles on it. The car was running terrible. Now its like new again. That's a cheap fix you can do yourself if you're ambitious and a bit mechanically inclined. Also scan it for codes. The computer probably knows what's wrong and just needs to be asked.

Mark helpful

Your Answer:

Related Questions

  • 2003 Pontiac Grand Prix GT jerking 2nd to 3rd 1 Answer

    This has been happening in the same place in my commute for the last few days. I get off the backroads and accelerating to around the 45mph area, it feels like the transmission is slipping. It je...

    2003 Pontiac Grand Prix GT

    -

    Maintenance & Repair

  • pontiac grand prix gt 2003 2 Answers

    pontiac grand prix gt 2003, suddenly would not start, has lights when u turn key with a click but no turn over, good battery. searched the memus and have seen suggestions from starter issues to s...

    2003 Pontiac Grand Prix GT

    -

    Maintenance & Repair

  • Swapped 2003 Pontiac Grand Prix GT engine into 2002 and it wont turn over. 2 Answers

    I crashed my 2003 Pontiac Grand Prix GT and purchased a 2002 Pontiac Grand Prix GT with a bad engine. I swapped the motors and now I can't get it to turn over. Someone help!

    2003 Pontiac Grand Prix GT

    -

    Maintenance & Repair

  • PONTIAC GRAND PRIX GT 2004 2 Answers

    MY 2004 PONTIAC GRAND PRIX GT KEEPS SHUTTING DOWN ON ME WHILE DRIVING.IF I PUT IT IN PARK AND START IT BACK UP IT USUALLY STARTS.TOOK TO MY MECHANIC HE RAN A SCAN AND NOTHING SHOWED.SO HE PUT IN A ...

    2004 Pontiac Grand Prix GT2

    -

    Maintenance & Repair

  • 2002 Pontiac Grand Prix GT 1 Answer

    Why won't my Pontiac Grand Prix GT start it cranks but wont start

    2002 Pontiac Grand Prix GT

    -

    Maintenance & Repair

Shortcuts

Search Pontiac Grand Prix Questions

CarGurus Experts

  • #1
    munron
    Reputation
    8,150
  • #2
    James Sparrow
    Reputation
    7,480
  • #3
    Dorian Hendricks
    Reputation
    6,030
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Pontiac Bonneville
1 listing
Used Pontiac GTO
4 listings
Used Pontiac Firebird
16 listings starting at $23,995
Used Chevrolet Camaro
13 Great Deals out of 479 listings starting at $11,999
Used Chevrolet Impala
4 Great Deals out of 130 listings starting at $3,495
Used Chevrolet Monte Carlo
9 listings starting at $9,800
Used Honda Accord
44 Great Deals out of 974 listings starting at $2,995
Used Chevrolet Corvette
36 Great Deals out of 858 listings starting at $14,900
Used Chevrolet Tahoe
12 Great Deals out of 785 listings starting at $6,730
Used Honda Civic
195 Great Deals out of 3,837 listings starting at $1,995
Used Buick Regal
23 listings starting at $6,395

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. Content will be removed if CarGurus becomes aware that it violates our policies.