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This weekend I began having transmission problems with my '96 Deville. It's really struggling to shift from 2nd to 3rd. This system warned me to "service transmission" about 50 miles before it happened. Until then everything was fine.

I nursed it to my mechanic this morning, and he is relatively confident that it is something he called the "valve box." Is this the "valve modulator" or something else? Any ideas about what this repair is going to cost me?

paul
west salem, wi
 

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From what I've heard, there is some common issues with the valve bodies on those cars. It maybe as simple as a weak spring or worn solenoid, or it could mean the valve body itself is bad. Definately nothing you could diagnose from a distance.
 
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