A/C Recirculation Door - Water Leak
File In Section: 1 - HVACBulletin No.: 56-12-04
Date: April, 1995
Subject:
Water Leak at the A/C Recirculation Door (Install New Hood Hinge Seal)
Models:
1983-93 Chevrolet and GMC Truck S/T Pickups
1983-94 Chevrolet and GMC Truck S/T Utilities
1991-94 Oldsmobile Bravada
Built Prior to the Following VIN Breakpoints:
Assembly
Plant
Division (Plant Code) VIN Breakpoint
GMC Truck Pontiac West (0) R0525661
Chevrolet Pontiac West (0) R0168567
Oldsmobile Pontiac West (0) R0704953
GMC Truck Moraine (2) All
Chevrolet Moraine (2) All
Oldsmobile Moraine (2) All
CONDITION
Some owners may comment that they have a water leak at the kick panel vent when their A/C controls are in the MAX position and it is raining.
CAUSE
Water is entering the plenum and cowl area by way of the hood hinge.
CORRECTION
To correct this condition, remove the current hood hinge seal and replace with a redesigned hood hinge seal. The redesigned seal has foam flaps which restrict water entry.
Service Procedure
1. Raise and support the hood.
2. Remove the cowl vent grille. Refer to "Cowl Vent Grille Replacement" in Section 2B of the Service Manual.
3. Remove hood hinge bolts from hood (both sides).
4. Remove hood from vehicle.
5. Remove fender nut and bolt from hinge (both sides).
6. Remove hood hinge from vehicle (both sides).
7. Remove hood hinge seals and replace with redesigned hood hinge seals P/N's 15995797 (LH) and 15995798 (RH).
Important:
Be sure that hood hinge seals are properly seated and sealed or water leakage could recur.
8. Install hood hinges to vehicle.
Important:
Apply lubricant to the hood hinges around the hinge to fender bolts.
9. Install fender nuts and bolts to hood hinges.
10. Install hood hinges to hood bolts. Tighten the hinge to hood bolts to 25 Nm (18 lb.ft.).
11. Install cowl vent grille. Refer to "Cowl Vent Grille Replacement" in Section 2B of the Service Manual.
PARTS INFORMATION
Parts are currently available from GMSPO.
WARRANTY INFORMATION
For vehicles repaired under warranty, use:
Labor
Operation Description Labor Time
B1717 Replace Use Published Labor
Hood Hinge Operation Time