SMU-SEC. 6A8 OR 6 REV. UPPER/LOW INTAKE
SUBJECT: SERVICE MANUAL UPDATE - SECTION 6A8 OR 6 - REVISED UPPER AND LOWER INTAKE MANIFOLD FASTENER TIGHTENING SPECIFICATION
MODELS: 1995-97 BUICK PARK AVENUE, RIVIERA (VIN K) 1996-97 BUICK LESABRE, REGAL (VIN K) 1996-97 BUICK PARK AVENUE, RIVIERA (VIN 1) 1997 BUICK REGAL (VIN 1) 1995-97 CHEVROLET CAMARO (VIN K) 1995-96 OLDSMOBILE NINETY EIGHT (VIN K) 1995-97 OLDSMOBILE EIGHTY EIGHT, LSS (VIN K) 1996-97 OLDSMOBILE LSS (VIN 1) 1997 OLDSMOBILE REGENCY (VIN K) 1995-97 PONTIAC BONNEVILLE, FIREBIRD (VIN K) 1996-97 PONTIAC GRAND PRIX (VIN K) 1996-97 PONTIAC BONNEVILLE (VIN 1) 1997 PONTIAC GRAND PRIX (VIN 1) WITH 3800 ENGINE (VINS K, 1 -- RPOS L36, L67)
THIS BULLETIN CANCELS AND SUPERSEDES THESE PREVIOUS BULLETINS: 57-61-18 (SECTION 6--ENGINE) 57-61-21 (SECTION 6--ENGINE) 67-61-18 (SECTION 6--ENGINE)
LOWER INTAKE MANIFOLD (L36 - C, G, H, W CARS)
ART 35806 FIGURE 1 LOWER INTAKE MANIFOLD ART 44774 FIGURE 2 LOWER INTAKE MANIFOLD TIGHTENING SEQUENCE
INSTALLATION PROCEDURE
1. INSTALL THE LOWER INTAKE MANIFOLD GASKET 2. INSTALL THE LOWER INTAKE MANIFOLD 3. APPLY GM P/N 12345382 THREADLOCKER OR EQUIVALENT ON THE BOLT THREADS 4. INSTALL THE LOWER INTAKE MANIFOLD BOLTS INCLUDING THE TWO HIDDEN BOLTS
TIGHTEN
TIGHTEN THE LOWER INTAKE MANIFOLD BOLTS IN SEQUENCE TO 15 N.M (11 LB FT)
LOWER INTAKE MANIFOLD (L67 - C, G, H, W CARS)
ART 154536 FIGURE 3 LOWER INTAKE MANIFOLD ART 211918 FIGURE 4 LOWER INTAKE MANIFOLD TIGHTENING SEQUENCE
INSTALLATION PROCEDURE
1. INSTALL THE LOWER INTAKE MANIFOLD GASKET 2. INSTALL THE LOWER INTAKE MANIFOLD 3. APPLY GM P/N 12345382 THREADLOCKER OR EQUIVALENT ON THE BOLT THREADS 4. INSTALL THE LOWER INTAKE MANIFOLD BOLTS INCLUDING THE TWO HIDDEN BOLTS
TIGHTEN
TIGHTEN THE LOWER INTAKE MANIFOLD BOLTS IN SEQUENCE TO 15 N.M (11 LB FT)
LOWER INTAKE MANIFOLD (L36 - F CAR)
ART 50046 FIGURE 5 LOWER INTAKE MANIFOLD ART 50288 FIGURE 6 LOWER INTAKE MANIFOLD TIGHTENING SEQUENCE
INSTALLATION PROCEDURE
1. INSTALL THE LOWER INTAKE MANIFOLD GASKET 2. INSTALL THE LOWER INTAKE MANIFOLD 3. APPLY GM P/N 12345382 THREADLOCKER OR EQUIVALENT ON THE BOLT THREADS 4. INSTALL THE LOWER INTAKE MANIFOLD BOLTS
TIGHTEN
TIGHTEN THE LOWER INTAKE MANIFOLD BOLTS IN SEQUENCE TO 15 N.M (11 LB FT)
UPPER INTAKE MANIFOLD (L36 - F)
ART 36634 FIGURE 7 UPPER INTAKE MANIFOLD ART 50287 FIGURE 8 UPPER INTAKE MANIFOLD TIGHTENING SEQUENCE
INSTALLATION PROCEDURE
1. INSTALL THE UPPER INTAKE MANIFOLD GASKET 2. INSTALL THE UPPER INTAKE MANIFOLD 3. INSTALL THE WATER OUTLET 4. INSTALL THE UPPER INTAKE MANIFOLD BOLTS
TIGHTEN
- TIGHTEN THE VERTICAL BOLTS IN SEQUENCE TO 15 N.M (11 LB FT) - TIGHTEN THE WATER OUTLET BOLTS IN SEQUENCE TO 27 N.M (20 LB FT) - TIGHTEN SIDE BOLTS IN SEQUENCE TO 30 N.M (22 LB FT)
UPPER INTAKE MANIFOLD (L36 - C, G, H, W CARS)
ART 42225 FIGURE 9 UPPER INTAKE MANIFOLD ART 49828 FIGURE 10 UPPER INTAKE MANIFOLD TIGHTENING SEQUENCE
INSTALLATION PROCEDURE
1. INSTALL THE UPPER INTAKE MANIFOLD GASKET 2. INSTALL THE UPPER INTAKE MANIFOLD 3. INSTALL THE UPPER INTAKE MANIFOLD BOLTS AND STUD
TIGHTEN
TIGHTEN THE UPPER INTAKE MANIFOLD BOLTS AND STUD IN SEQUENCE TO 10 N.M (89 LB IN)
FIGURES: 10 ATTACHMENTS: 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 1997 GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.
