2004 Pontiac Grand Prix Trans Problems

Asked by Nov 07, 2014 at 12:32 PM about the 2004 Pontiac Grand Prix GT2

Question type: Maintenance & Repair

2004 model grand prix. 155,000 miles. daily driver.
Started a few months ago. It would run hot and shift hard going from 1st to 2nd, then 2nd to 3rd, but not 3rd to 4th. If I park and turn it off, it wouldn't do it anymore. Lately, it has done it more often. Also seems to 'slip' from lower gears (or not catching-not sure how to explain it). My dad fixed the overheating problem a couple of months ago, but the car stills shifts hard ever so often (not every time I drive it). No other problems with it. everything else works fine. Any suggestions?

2 Answers

4,335

Yes, I have a suggestion. Take it to a transmission shop and get it diagnosed right away. Transmission problems don't go away or heal themselves with time. They only get worse. Transmissions are grossly expensive to repair or rebuild so if you can head off a problem before it gets worse you will likely save a ton of money.

1 of 1 people found this helpful.
160

if you scan the car you most likely have a P1811 code set (maximum adapt long shift) this sets and gives you the harsh shift as the computer defaults to maximum line pressure and removes any shift adapts ( a slower application of the clutches to improve shift feel) most times this happen because the pressure control solenoid is jamming a common problem in the 4-t65-e trans, the trans is most likely fine and the pc solenoid just needs to be replaced

2 of 2 people found this helpful.

Your Answer

Pontiac Grand Prix Experts

  • #1
    Js08016
    Reputation
    4,420
  • #2
    Tom Demyan
    Reputation
    3,050
  • #3
    munron
    Reputation
    2,470
View All

Related Models For Sale

Used Chevrolet Impala
541 Great Deals out of 35,254 listings starting at $900
Used Pontiac Bonneville
497 listings starting at $3,699
Used Pontiac G6
59 Great Deals out of 3,892 listings starting at $1,600
Used Chevrolet Monte Carlo
4 Great Deals out of 1,275 listings starting at $1,488
Used Ford Mustang
592 Great Deals out of 36,382 listings starting at $899
Used Pontiac Grand Am
1,087 listings starting at $994
Used Pontiac GTO
9 Great Deals out of 486 listings starting at $5,995
Used Chevrolet Malibu
977 Great Deals out of 65,600 listings starting at $1,000
Used Chrysler 300
334 Great Deals out of 18,058 listings starting at $990
Used Nissan Maxima
259 Great Deals out of 23,016 listings starting at $1,400

Used Cars For Sale

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.