RAM 2500 Truck 4WD V10-8.0L VIN W (1997)
Vacuum Reservoir HVAC: Description and Operation
The vacuum reservoir is mounted in the right cowl plenum area, under the cowl plenum cover/grille panel. Vacuum stored in the reservoir is used to
operate the vacuum-controlled vehicle accessories during periods of low engine vacuum, such as when the vehicle is climbing a steep grade or under
other high engine load operating conditions.
The vacuum reservoir cannot be repaired and, if faulty or damaged, it must be replaced.
