Adjusting the Gear Cable: Check
WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.
Place the lever in the N-position. Push the lever forward without touching the shift lock button. The play should be obvious.
Place the lever in the D-position. Push the lever backward without touching the shift lock button. The play should be obvious.