Erratic Shifting of the Automatic Transmission on Pontiac Grand Prix

The transmission pressure control solenoid may fail causing erratic shifting. Our technicians tell us that partial dis-assembly of the transmission is necessary to replace a failed pressure control solenoid.

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Average mileage: 129,388 (12,000–225,000)
12 model years affected: 1995, 1997, 1998, 2000, more2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
62 people reported this problem
39 people shared problem details
2005 Grand Prix started jerking before the gear would engage and now you put it in a gear and push on gas peddle and it won't go anywhere in any gear. If you are on a hill it will drift backwards. If you shut it off and wait a while and restart the car and put in gear it will engage but doesn't have much power. Could that be the transmission going bad!!
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Once the transmission gets warm, it revs engine and shifts hard through 1st, 2nd and 3rd gears. Once a speed of 45mph+ is reached the car is fine. Solution, replacing solenoid and having the valve checked out at as well.
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Transmission whines and shifts hard after a while of driving
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Code 1811 causes hard shifting; only when hot
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I'll be driving and it feels like a slip of the tranny, this is very spuratic.
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Transmission began slipping then stopped pulling in any gear. Diagnosed as the Transmission Pressure Control Solenoid. Replaced the defective part.
9 people like thisFlag inappropiate
Car shifts hard from 1st, 2nd gear, stops once 40+ mph are reached. Can let the car sit for 2 to 4 hours and it will not shift hard again.
9 people like thisFlag inappropiate
hard upshifting between 1st & 2nd & 3dr.trbl.code 742 torque conv.clutch circuit stuck on yesterday for 10 miles.mile.Car was bucking like a horse on shifting & felt like slippage.could be 1-2 shift or 2-3 shift solenoid.
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500 dollar fix, another common issue with this car.
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2000 GP Pontiac, Transmissions shop says not worth fixing yet. Would be to costly.Some times hard shift some times smooth. I will wait for transmission to go bad & then have them rebuild it. Cars been hard shifting since 80,000 miles.
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Erratic shifting. New pressure control solenoid fix the problem. Recall it.
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erratic shifting, shift smooth at cold start up, once it warms up the shifting becomes erratic
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a pause then jumps into gear
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When shifting into gear 45 mph it slips and slams hard into the next gear. Looking at the high-pressure solenoid to be replaced
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Intermittent hard shifting in all gears. Feels like it has a shift kit. Have had the issue for 5 years now. Only have the problem in winter months (Dec, Jan, Feb) and only shifts hard after it warms up. Shifts perfect in warmer months for the past 5 years. I was told I need a trans solenoid and was quoted $1100 by a local shop. Decided to just drive it until it breaks.
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Not fixed yet.
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Error code P1811
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car takes gears but when driving it does not shift or if ;I let the gas go it will shift
When I tried reversing into my drive way (which is slightly tilted upwards) and my car would refuse to move. Then while I was driving it would jerk when i was at 45mph. I then would increase my speed at 50-55mph it would stop.... I have had problems with this car before and it has never been like this, Looking for assistance so i can find out what the next step is that I would have to take.
Car wont shift in to drive. After about 10 miles and has warmed up it does start to shift.
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