Buick Lesabre hesitation problems

Filed Jul 8, 2016 · Fuel system · 167,000 miles · AZ

I have been experiencing. Severe hesitation and loss of power. I have replaced the 3 ignition coils, the ignition module, new spark plugs, and a wire set. I have been reading alot about fires on this site. Yesterday 7/7/16 when I came home there was a loud weering sound, and once I turned off the engine their was a loud piercing whistle as if built up pressure was being relieved under the hood near the passenger side wheel well. Today again a lack of power, flashing service engine light, and no power. I afraid the engine might catch on fire as in other postings on this site.

Filed Apr 1, 2014 · Engine · 52,213 miles · IN · fire

Tl* the contact owns a 2002 buick lesabre. The contact stated that upon initial start-up, the vehicle hesitated and appeared to misfire. The contact then suddenly heard a loud pop followed by a massive amount of black smoke coming from under the hood of the vehicle. The vehicle was not diagnosed or repaired. The dealer and the manufacturer were made aware of the failure and declined to provide a remedy to the contact. The vehicle was repaired. The failure mileage was 52,213. Updated 05/28/14 ma updated 6/26/14*cn updated 7/29/17

Filed Oct 22, 2013 · Engine · 48,000 miles · OH

Tl* the contact owns a 2005 buick lesabre. The contact stated that while driving various speeds, the vehicle began to exhibit hesitation and a severe vibration. The vehicle was taken to an independent mechanic where the motor mount and gasket were replaced. The manufacturer was notified of the problem. The approximate failure mileage was 48,000. ...updated 12-24-13 *bf the lower intake gasket was faulty and leaking oil and coolant. The technician also found the plastic upper intake plenum warped and leaking coolant into the lower intake manifold causing the engine to misfire. Updated 12/31/13

Filed Aug 10, 2008 · Transmission · 79,324 miles · TX

When we first bought my buick back in 2002 we have had tranny problems with noises and hesitation. We took it back to the dealership and they replaced the valvebody. That didn't help the noise but it helped the hesitation. The noise is a whining noise in first and second gear but when you get in third it goes away. That is due to a bad sun gear. Which ultimately LED to the destruction of my transmission. We tried to get the dealership to help us but they just said it was due to normal wear and tear (typical dealer doesn't want to take responsibility). After $3200 and 4 days we had a new tranny. I drove it for 3 days and the whining noise came back. I am going to take it back and tell the to fix it because I don't feel like paying $3200 for another tranny.

Filed Mar 27, 2008 · Visibility · MI

Both rear windows failed to go up. One window broke last spring and the other broke shortly thereafter. We inquired from a local dealer the cost to have the regulators repaired and were told the price would be approx. $400 per window therefore we have not had them repaired. The front passenger window has recently begun to hesitate when operating it so we chose not to use the window fearing it would also become stuck in the down position. As of march 27 I began performing searches on the internet for similar complaints and learned this is a known and common problem with the 2001 buick lesabre. Therefore I feel a recall should be issued and gm should replace the regulators free of charge.

Filed Jan 17, 2007 · Transmission · 65,000 miles · WI

Tl* -the contact stated that while driving his 2002 buick le sabre (failure mileage: 60000) at 25 MPH the vehicle began to hesitate. When applying the accelerator the vehicle hesitates and didn't seem to increase speed. *jb updated 02/16/07.

Filed Dec 19, 2005 · Engine · 75,630 miles · MI

Hard starting, lack of power, hesitation gm dealer diagnosed intake leak by egr valve (air and coolant leaks) dealer replaced intake plenum (non warranty).

Filed Oct 24, 2005 · Acceleration, Brakes · AL

Dt: the contact stated that when pressing on the gas pedal it hesitated. Also, rear side window will not go up or down. The window on the passenger's side will not go all the way up and it will not seal. Also ,the headlights came on and stayed on. The dealership reprogrammed the light and it came back on. The manifold intake blew out, costing the contact $150 to replace the intake gaskets. The brakes were noisy all the time. When making a left turn the flap will rub the tire, and it caused the tire to blow out .

Filed Nov 22, 2004 · Engine, Fuel system · 58,859 miles · WI

Check engine light came on, ran rough while starting, hesitates/spatters. Worse in damp weather. Fuel pressure regulator leaked. Replaced fuel pressure regulator. *bf fuel pressure was bleeding off.

Filed Feb 19, 2004 · Engine · 44,500 miles · NJ

Purchased new, this well maintained, garage kept vehicle failed with 44,500 miles. I changed the oil & filter after the first 500 mile break-in period & every 1k miles. On 2/12/04, there was a rough unexpected engine knock upon startup. Placed in reverse, there was a shaking sensation & the check engine lamp eventually lit. I drove to the dealer. I was told that the radiator coollant leaked into the oil portion of the engine. It was an unpleasant situation, however, a decision had to be made & I opted to replace the vehicle with a 2004 lesabre. I drove it off the lot the same day and tried to put my 1998 problem behind me. I have owned lesabres in the past, a park avenue & other gm products where I clocked over 250,000 miles each on most of them. Two days after the purchase of my 2004, the burning question was why my 1998 bit the dust? I felt drawn to my computer & searched: "buick lesabre plenum failures" to see what I might find. I viewed several hundred complaints at this site and many others describing the very same problem. All I could help but wonder, was if this same defect prone part was in the car I just purchased? I called gm and spoke to a rep. I told herabout my 1998 model and then asked if she could let me know if it had been changed on my new 2004 model? Yes, my 2004 has the same defective intake manifold, so without any warning, the same situation will arise in the future. What will they do for me about my new car? Nothing. Beware the ticking time bomb if your gm vehicle has the 3800 series ii. A loud pop, followed by hesitation & by the time the ser engine light glows -- it is already too late. Many fires have been reported along with this problem. Sources indicate that it is on approximately 35 mill assorted gm cars manufactured from circa 1994 to present.