O/T 2001 Lasabre Transmission

Anonymous-0 · May 21, 2009

My 01 Buick Lasabre Is Starting to shift hard on the first shift, has only 67,000 miles. Fluid is up & looks & smells O.K., does anyone know of any troubles with these. Thanks Gene

Greenday · May 22, 2009

could be a faulty sensor somewhere

Brokenwrench · May 22, 2009

Hey Genos,

Take it in and have a scan tool put on it. It s a 4T65E trans. Fully computer controlled. Usually when they start to shift hard, the computer has seen a trans problem and is compensating by raising the pressure in the trans. The 1-2 shift is always the hardest when they go into failsafe. The most likely code they will find is a P1811-max shift adapt and long shift time-. This is usually caused by a bad pressure control solenoid in the trans, or too much internal oil loss. But, this is just a guess. I could give you alot better info if you had the code numbers (not definitions).

bradk · May 22, 2009

I second the pressure cont. solenoid.I have a '00 Olds Sillouhette van in shop with same symptoms and it's getting the solenoid today.

Located in side cover(driver's side) at valve body.Part # for yours is 10478146.

greygoat · May 22, 2009

I had the same problem with a Chev. S-10 truck,
a new solinoid fixed it, and I had the fluid
changed and new filter and, of course, pan
gasket.
My oil change place wanted $50 for a scan, but I
don"t trust them for anything but oil changes. I
went to a mom and pop small transmission shop
who scanned it free, and fixed it quickly at a
fair price.

O/T 2001 Lasabre Transmission

Anonymous-0

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Greenday

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Brokenwrench

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bradk

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greygoat

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