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Buick LeSabre Transmission

57 messages,  Last post on Oct 01, 2009 at 6:28 PM

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#53 of 57 Re: Lasabre transmission won't engage [wheeldeals] by imidazol97 Aug 13, 2009 (10:27 am)
Replying to: wheeldeals (Aug 13, 2009 6:42 am) Most people say just the opposite. The 4-speed is long lived. I had a 93 with no problems, 150K. I have a 98 with 168,000. I have an 03 with 92,000.
#54 of 57 Transmission noise by softballpapa Sep 02, 2009 (8:46 am)
I bought a used 2000 Lesabre with 111,000 miles on it. When I have car in overdrive I get a whining noise. I don't think it shifts properly into overdrive so I drive it in 3rd gear. only whines when I am in overdrive about 50 miles per hour and higher. Is this a serious problem or do you know of easy fix. also I have a oil leak coming from top of engine. do you know of problem with gaskets on this model. engine is a 3800 V6 I don't know transmission style. Thanks for your help, Softballpapa Replies to this message: wheeldeals (Sep 15, 2009 4:48 am)
#55 of 57 Re: Transmission noise [softballpapa] by wheeldeals Sep 15, 2009 (4:48 am)
Replying to: softballpapa (Sep 02, 2009 8:46 am) I would take my car to a transmission repair garage and have them check the whine. It may be a cheap fix if caught soon enough. Cars are like our bodies, the sooner you treat a problem the better. At 10 years, the leak is probably your valve covers. Jim
#56 of 57 Transmission by nosfurought2 Oct 01, 2009 (2:10 pm)
Just purchased a 97 Lesabre with 113K. It has traction control. When I begin cruising at freeway speeds, there seems to be a hesitation in shifting, most noticable with going uphill. also, when in cruise control, more adverse reaction, engine will idle up several thousand RPMS without shifting. I was going to experiment with taking it off traction control and hadnt had time to check it. Wondering if it is computer/cruise control issues or tranmission or a combination. thanks Replies to this message: imidazol97 (Oct 01, 2009 6:28 pm)
#57 of 57 Re: Transmission [nosfurought2] by imidazol97 Oct 01, 2009 (6:28 pm)
Replying to: nosfurought2 (Oct 01, 2009 2:10 pm) I don't believe the 97 leSabre has traction control. It has antilock brakes.   In the rest of your post, I believe you're describing when the load on the car gets greater such as a hill, the transmission doesn't downshift from 4th into 3rd. That is normal. At 65 mph it will cruise at 1800 rpm or some number close to that on the tachometer. When the load increases gradually, the torque converter will unlock and the engine speeds up several hundred rpm depending on how much extra throttle has been applied. The extra engine speed usually gives enough extra power to maintain speed even in 4th gear. But applying the throttle gently might not get the results you want. What you can do is just move the shift lever to 3 and the transmission will downshift to 3rd and rev the engine a little more and have substantially more power. You do NOT need to undo the cruise control to do this. After the load is over just shift back into 4th or OD.   I believe the computer learns driving patterns. If you continually do rapid starts and higher throttle acceleration, the engine and transmission shifting are adjusted to expect to do what the driver indicates. So the car may learn your driving if you do want a more showy or brisk driving style. That may, may affect how the car does the slow acceleration when climbing a noticeable hill in 4th gear. Remember the car has been generally calibrated to get 29 mpg overall. Many people can get 32-33 driving interstate speeds on trips. Staying in 4th gear helps the economy.

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