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.Google+
Car Problem Reports
Buick LeSabre Transmission Pressure Control Solenoid Failure May Cause Erratic Shifting
Buick LeSabre Problem
Average Mileage: 119,588 mi (40,000 mi - 200,000 mi)
Visitor, 2000 Buick LeSabre
not changing gears smoothly can feel a slight bump
Visitor, 2002 Buick LeSabre, 120,000 mi
hard shifting first and second gear only after the car has been running for 20 mins. If I turn the car off for a few mins. The car shifts ok for about 20 mins. Then problem starts again.
Visitor, 2005 Buick LeSabre, 130,000 mi
My 2005 lesabre transmission shifts hard, you feel the shifting from first to seconard and to final shift, is this the pressure control switch. and is it expansive to fix.
Visitor, 2005 Buick LeSabre, 40,000 mi
Hard shift once the car reaches normal temperature.
It started around 125000 miles. It only happens when it is cold (usually below freezing). When I shift into reverse to back out of the garage the first time in the morning it really goes into gear with a wham. After that it usually doesn't do it again until next morning. I don't know if it is doing any harm or not. It hasn't been fixed.
Visitor, 2000 Buick LeSabre, 120,000 mi
Took a year to diagnose as the shuddering sensation and hard shift was intermittent... I finally found the possible cause on internet to take to the mechanic... 5 hour labor job for a faulty part that should have been recalled... listed on NHSTA website as a bad seal on solenoid allows in dirt and fails
My 2001 Lesabre jerks as it shifts, but it doesn't always happen. If it does it, it continues to do it. But the next time it might work fine. I have learned to let off the gas and let it slowly shift into the next gear. My husband does not do that so when he drives it really chugs into gear. I have no idea other than what I have read about the transmission solenoid being the problem. But I think that it is strange that it does not always do it. I was quoted $640 to replace the shift solenoid.
Visitor, 2005 Buick LeSabre, 53,000 mi
transmission slipping from 2nd to 3rd gear. Banging into gear
Visitor, 2003 Buick LeSabre, 147,000 mi
The automatic transmission jerks slightly with normal gear transitions; jerks harder when stringly accelerating.
Visitor, 2001 Buick LeSabre, 92,000 mi
occasional heavy shifting