EXPERTEC TSB (93-10-1)

EXPERTEC TSB

TECHNICAL SERVICE BULLETIN

A/C EVAPORATOR CASE DRAIN DRIP - INSTALL NEW DRAIN TUBES

Model(s): All 1992 Buick Roadmaster Sedans

All 1993 Buick Roadmaster Sedans built prior to VIN PR403264

Bulletin No.: Buick 93-10-1

Date: 09/15/1992

BULLETIN ILLUSTRATION LIST

CONDITION

Condensate water from the evaporator drain tube can leak into the passenger compartment (passenger side front floor area).

CAUSE

Under conditions of extreme humidity, air flow through the engine compartment can allow a small amount of condensate water to work past the seal of the evaporator drain tube. The water then slowly drips or seeps into the passenger side front compartment, generally wetting the carpet on the floor area near the transmission hump.

If there is a large volume of water, or any leakage noticed in the back seat, use normal diagnostic procedures to determine cause of the leak.

CORRECTION

Inspect the evaporator drain tube for blockage, clear as required. Install the 90 degree rubber drain tube over the existing tube, pointed downward, as illustrated. This will allow the water to drain down away from the evaporator drain opening.

PART INFORMATION

Parts Number	Description
22542866	Hose-A/C

Parts are currently available from GMSPO.

WARRANTY INFORMATION

Labor Operation No.: T7985

Labor Time: 0.2 Hr.