I hate water leaks... ... You might check the front where the cowl lower plenum meets the a-pillar (windshield pillar). ther is a T. S. B. on the 99's and 2000's, that address pounding a chisel between the metal there to stop a squeak, and then pack the seam with seam sealer to prevent water leaks. My 2000 still squeaks BAD, but I am afraid to let some flunky at the dealer under the dash with a hammer and chisel. My '96 gasser 2500 always got wet on the drivers side also, but I sold it and that cured the problem from my point of view.
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2000 QC SHORT BED 4X4, 24 VALVE W/ 275 HP INJECTORS, 3. 54 GEARS W/ POSI, AUTO, BLACK WITH EVERYTHING EXCEPT LEATHER,285/75R16 KELLY SAFARI AWR, RAIDER NOMAD CAB HIGH CAP,FACTORY RAZ STEREO W/ STEERING WHEEL CONTROLS, KENWOOD 848 AMP, KENWOOD EXCELON 6X9 IN DOORS AND KENWOOD EXCELON 6IN. ROUND DUAL-MAGS IN REAR DOORS, MTX FACTORY FIT BOX W/ 2-10"SUBS UNDER REAR SEAT
ORDERED: 2001 ARCTIC CAT ZR800 TWIN LE BLACK...