Buick Century Problem Report
Buick Century Erratic Shifting of the Automatic Transmission
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.
same problem as everyone else shift solenoid gone bad. if you turn car off for a few minutes and restart problem will go away for a little while but will come back.my car has had this problem for over a year at about 150,000 or so i now have over 205,000 on it and still running fine. just that nuisance clinking ever so often but nothing I am going to pay 2500 to fix. car is 9 yrs old that 2500 when I do decide to spend it is going on a new car not in this on besides it only happens very seldom so I can live with it. - Visitor
Same problem as others are having. Around 70,000 miles on a trip it started to shift hard and whine. I took it to a garage and $830.00 later they said the solenoid was bad. Not even 3,000 miles later it started the same thing again. I refuse to pay another $800 plus dollars to fix a problem that GM should have fixed right the first time. I plan on not to purchase any other Buicks nor will my family members. - Visitor
Car won't shift acts like it has no power and gets really bad gas Milage - Visitor
Bought it w/ 88k mi. now @ 110k, have had regular oil changes @ 3k intervals and have read elsewhere of the same problem. There's a hitch in her giddyup, lots of lurching when it's trying to shift and then the check engine light comes on, then goes off and it runs fine. Recently had the codes read: PO742 TCC CKT stuck on and PO481 Cooling Fan 2 Ctrl CKT Malfunction. AAAAARRRRGGGHHH. Should this have been recalled along time ago ... . - Visitor
hard shifting after driving long on long trips,after key is turned off and back on it shifts normal. - Visitor
My transmission shifts hard. When I took it to the mechanic, they told me it would be $2500 or more to take it apart and fix it... I figured I might as well pay for a used transmission that would be cheaper and swap it out... - momo2477
I have a 2001 Buick Park Avenue Ultra with 115,000 miles and for the last 5,000 miles the transmission has been shifting roughly intermittently. Sometimes it is fine and sometimes the shifting is rough. Last week I drove it about 40 miles to a golf course and in the stop and go traffic the shifting was rough. After playing golf for 5 hours I drove back the same way and there were no problems and the shifting was smooth. I had the transmission serviced at 107,000 miles and after that is when the shifting problems began. I had the transmission serviced again at 110,000 and this helped until now at 115,000 miles. Reading all the reports, it seems that the power control solenoid PCS needs to be replaced. - rasturgill
Had the solenoid replaced at a cost of $800. Within a few months the problem with the erratic shifting started again. Took the car back to the repair place (Christian Brothers) said the diagnostic code was different and said that the car needed a valve body replacement. Had this repair at A+ Transmission at a cost of $1075. Now a year later, but with less than 30,000 miles on the car, the car is shifting roughly again, and a diagnostic check said the torque converter switch is stuck to "on". Planning to take it to another transmission shop for a second opinion. This apparently is a habitual problem from other reports I've read. - Visitor
transmission sometimesshfts hard - Visitor
2004 Buick Century won't accelerate and th check engine light is on. Sometimes the engine won't turn over causing it not to start. After a while, the car cranks and drives OK but there is skipping and then the acceleration problems start. - Visitor
I have the erratic shifting but have not had the problem fixed yet. - Visitor
Car jerks when accelerating from a stop. The problem is intermittent. - Markmiller
Normal shifting when cold, but after about 25 minutes of driving, shifts have a slight bump in them. I checked my fluid level and color and they were normal. I just added some Lucas Transmission Fix to the system to see if it will help. One day after adding it, still noticed a slight 'bump' at shifts upon acceleration once things warmed up. Maybe it needs a little more time for the Lucas to work itself in or Lucas says that a second bottle may be needed. I'm guessing that there is a pressure change issue as the transmission heats up. That may be the real issue. - Visitor
there is a whirring noise behind where transmission stick located. no warning started bumpy shifting on take off, also taking off in reverse. car has 150,000 mi. no warning at all just started yesterday - wonderall
HARD SHIFTING BETWEEN GEARS. I HAVE TO STOP AND SHUT THE ENGINE OFF FOR ABOUT 3 - 5 MINUTES. THE PROBLEM SEEMS TO GO AWAY AFTER THAT UNTIL NEXT TIME. THE PROBLEM CAN RETURN IN DAYS, WEEKS, OR EVEN MONTHS. I'M SURE IT WILL GET WORSE WITH TIME AND WILL HAVE TO BE FIXED. I'VE BEEN TOLD ITS THE TRANSMISSION PRESSURE CONTROL SOLENOID. OTHER THAN THAT THE CAR RUNS AND LOOKS ALMOST LIKE NEW. PEOPLE CAN'T BELIEVE ITS 15 YEARS OLD! - Visitor
intermittent problems with the transmission shifting roughly - Visitor
Had the transmission serviced at Lee Miles Never really fixed the problem of hard shifting, especially when warmed up Getting worse now - cokkinos
erratic shift. worst during hot/cold days - Visitor
Only happens during the winter time. Has happened this time of year for the past 4 years. Started at around 55000 miles....currently at 98000 miles. No solution yet. Going to try having pressure solenoid replaced soon to see if that fixes it. - Visitor
transmission shifts hard from time to time.never when cold but it can happen any time when warm. I changed fluid and filter,some improvement. Problem not resolved. - Visitor
I need to know if the evap purge solenoid control circuit and the evap vent solenoid control ci...
Selonoid replaced at 20K and acting up at 50k. Had many service flushes with the same fluid re...
can I change the pressure control solenoid w/o taking the whole front end apart
where is the shift control solenoid located on 1999 buick century?
The car shifts hard into 2nd gear when in heavy stop and go traffic