Modulator is on the side of the tranny, outside, has a vac line to it.

It is possible to adjust it for snappier shifts, but this will only hide the problem, not fix it.

Steve Brotherton has a long article about transmission adjustments. The link is in an old thread, but I don't remember which now. I'd read that before jumping around too much, then you will know what to tell the shop.

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!