WATER LEAK AT THE A/C RECIRCULATION DOOR. GMC Truck S15 Pickup - 2WD 1991

For 1990-2009 cars

# WATER LEAK AT THE A/C RECIRCULATION DOOR

#### 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:

PLANT (PLANT CODE) DIVISION VIN PONTIAC WEST (0) GMC TRUCK R0525661 PONTIAC WEST (0) CHEVROLET R0168567 PONTIAC WEST (0) OLDSMOBILE R0704953 MORAINE (2) GMC TRUCK ALL MORAINE (2) CHEVROLET ALL MORAINE (2) OLDSMOBILE 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 N.M (18 LBS. FT.) 11. INSTALL COWL VENT GRILLE. REFER TO "COWL VENT GRILLE REPLACEMENT" IN SECTION 2B OF THE SERVICE MANUAL.

#### PARTS INFORMATION:

P/N DESCRIPTION QTY 15995797 HOOD HINGE SEAL ASSEMBLY (LH) 1 15995798 HOOD HINGE SEAL ASSEMBLY (RH) 1

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

WARRANTY INFORMATION

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OP DESCRIPTION LABOR TIME B1717 HOOD HINGE-REPLACE USE PUBLISHED LABOR OPERATION TIME

FIGURES: 0

GENERAL MOTORS BULLETINS ARE INTENDED FOR USE BY PROFESSIONAL TECHNICIANS, NOT A "DO-IT-YOURSELFER". THEY ARE WRITTEN TO INFORM THOSE TECHNICIANS OF CONDITIONS THAT MAY OCCUR ON SOME VEHICLES, OR TO PROVIDE INFORMATION THAT COULD ASSIST IN THE PROPER SERVICE OF A VEHICLE. PROPERLY TRAINED TECHNICIANS HAVE THE EQUIPMENT, TOOLS, SAFETY INSTRUCTIONS AND KNOW-HOW TO DO A JOB PROPERLY AND SAFELY. IF A CONDITION IS DESCRIBED, DO NOT ASSUME THAT THE BULLETIN APPLIES TO YOUR VEHICLE, OR THAT YOUR VEHICLE WILL HAVE THAT CONDITION. SEE A GENERAL MOTORS DEALER SERVICING YOUR BRAND OF GENERAL MOTORS VEHICLE FOR INFORMATION ON WHETHER YOUR VEHICLE MAY BENEFIT FROM THE INFORMATION.

COPYRIGHT 1995 GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.