2003 Buick Lesabre transmission problems

Filed May 19, 2025 · Steering, Transmission · WI

The transmission doesn't shift correctly even after it's warmed up it is erratic and rough while connecting the transmission gears and jerks very hard at most times. The power steering is not working correctly and makes it difficult to drive at all with the combined issues I'm very concerned about my and my family safely

Filed Jan 6, 2020 · Transmission · 116,000 miles · WA

When the vehicle gets warmer during transit, the transmission begins to slip. It gets worse and the duration of the slip begins to. Last longer.

Filed Jun 5, 2019 · Transmission · NY

Buick 2003 lesabre tsb I need the service bulitons on the transmission for shudder ,harsh shifting while driving and heated up properly

Filed Jun 4, 2019 · Transmission · 45,000 miles · NY

Transmission bumps some times

Filed Jan 30, 2015 · Airbags, Electrical · 102,225 miles · FL

We bought the car december 29,2015, the car had 102,0215, and drove it to the doctor on our way back, the would make a "clunking" sound from trans-axles, and we notice that the dash board came up and it has hardware screws across the dash as if to hold it down.

Filed Dec 20, 2014 · Transmission · 65,000 miles · IN

Autoatice transmission slips

Filed Oct 4, 2014 · Engine, Transmission · PA

When the lesabre was reliable; it was reliable. However, when issues started to occur, they were massive. At approx 90k miles the transmission went with no warming and was instantly. After that the car still had issues with the drive, transmission and gears. The fuel pump and intake manifolds have been replaced. As of 2014 I continue to have issues with this vehicle. It currently runs very hard and when idle and in traffic (very scary) will randomly cut off with zero warning or even begin to smoke. There is the correct amount of oil and antifreeze. The car will randomly smoke as well. I have been to the mechanic several times trying to figure out the main issue so that it can be repaired. This is extremely frustrating. Anyone have any solutions? I keep reading plenty of owners with the same issue(s) so I find it hard to believe that gm/buick has not done a recall on parts for the engine, transmission, etc.

Filed Jun 11, 2014 · Engine, Transmission · 76,000 miles · VA

Intake manifold gaskets (both lower and upper) have failed resulting in coolant loss. Poorly designed plastic gaskets are no longer used but this should be a recall as it results in safety issue if coolant is completely depleted on the highway resulting in failure of vehicle to drive due to engine failure.

Filed Jul 31, 2013 · Acceleration, Transmission · NC

Gas pedal sticks when going forward after using reverse.

Filed Dec 29, 2011 · Transmission · 104,122 miles · NY

Transmission shudder &hard shifts.