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Old July 23rd, 2014, 09:25 PM   #1
gmcpower98
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Default 02 Buick 3.8Litre will not shift into 4th gear

It also will occasionally shudder while waiting at a stop light.
The other gears shift ok if not a bit firm.
Is something broken or will a trans filter/fluid change help.
Don't want to pay for a change if I just have to have it torn apart anyway.
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Old July 24th, 2014, 05:11 PM   #2
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Well....... had a trans. flush at Valvoline Instant oil Change today.
1st, 2nd, and 3rd shift smoother, but, still no 4th.

Any suggestions on reputable trans. shops??

O'Neil's says they will do a diagnosis for $60
They said could be a sylenoid (couple hundred)
or may need overhauled ($1800 to put in a used one or $3000 to rebuild mine)
I hear they are good but, expensive.

I think the car is worth about $4000 FWIW

Thoughts....suggestions???
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Old July 31st, 2014, 07:29 PM   #3
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Replacing the converter may solve your issue. You could simply have an issue with a false line pressure eliminating the lockup(tcc) . Throw a tester in it to eliminate the guesswork.

I would call West Michigan Transmission. I had a few paragraphs here about previous experiences. Short version is that they have proved them self's for quality work and low price going beyond what other shops do without costing as much.
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Old August 1st, 2014, 06:44 AM   #4
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kaz offroad on plainfield ave rebuilt the trans in my superduty. they did a great job and had it done in a resonable amount of time. warranty is very good as well. they stood behind a couple issues i had with my valvebody and fixed it for me at no charge.
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