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Old 09-05-2014, 08:55 PM   #1
vica
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2005 Bonneville transmission issue

Wow! Another problem with Bonne. My transmission has a very hard shift intermittently. The car has approximately 102,000 miles. The shop says it needs 2 new solenoids(1-2 & 3-4). The cost is going to be about $1050. I've read of a pressure control valve causing similar problems but not 2 solenoids. When the problem occurs all the shifting is hard in all gears. Any thoughts?

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Vic
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Old 09-06-2014, 09:53 AM   #2
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Re: 2005 Bonneville transmission issue

First, you need to know what the code(s) actually is.......

Most transmission codes that are set, will cause the PCM to command FULL LINE PRESSURE, which causes harsh shifts....

That's a lot of money for two solenoids.....

Yes you have to separate the ball joint, drop the cradle, and lower the engine/tranny on the driver's side, and remove the axle, to get the side cover off......if the correct procedure is to replace just the two solenoids, which I doubt if the transmission is shifting ok, what is their labor rate, and how many hours are they quoting, and are they doing a fluid/filter replacement also?

Also, is their work guaranteed?
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Old 09-10-2014, 10:12 PM   #3
vica
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Re: 2005 Bonneville transmission issue

Tech II
They will replace the 2 shift solenoids plus the fluid and filter plus the pressure control solenoid for that price. The gal I talked to on the phone mis-stated what parts were included in the quote. The warranty is 12 months/12000 miles.
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Old 09-11-2014, 08:55 AM   #4
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Re: 2005 Bonneville transmission issue

Try another place and get an estimate.....still need to know the codes....

Don't tell them that you have a previous diagnosis/estimate....
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Old 09-11-2014, 09:26 AM   #5
vica
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Re: 2005 Bonneville transmission issue

The code is/was P1811.
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Old 05-24-2015, 04:53 PM   #6
youngnwiaguy
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Re: 2005 Bonneville transmission issue

just curious if you got this problem fixed. My sister's car is doing the same thing. What was the price to fix?
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