For 1990-2009 cars

# INFORMATION ON EXHAUST MANIFOLD BOLT USAGE

#### SUBJECT: INFORMATION ON EXHAUST MANIFOLD BOLT USAGE

#### MODELS: 1994 BUICK ROADMASTER 1994 CADILLAC FLEETWOOD WITH 5.7L ENGINE (VIN P - RPO LT1)

1994 CHEVROLET CAPRICE AND IMPALA WITH 4.3L OR 5.7L ENGINES (VINS P, W - RPOS LT1, L99)

VEHICLES BUILT BEFORE THE FOLLOWING VIN BREAKPOINTS MAY HAVE EXHAUST MANIFOLD BOLTS THAT BOTTOMED OUT DURING ASSEMBLY.

DIVISION SERIES ENGINE VIN BREAKPOINTS -------- ------ ------ --------------- BUICK B 5.7L (LT1) RR426683

CADILLAC D 5.7L (LT1) RR723361

CHEVROLET B 4.3L (L99) RR167400 5.7L (LT1)

DURING ANY EXHAUST MANIFOLD SERVICE TO THE VEHICLES LISTED, INSTALL BOLT 15538420 AT LOCATIONS 21, AS INDICATED IN THE FIGURE. AT ALL OTHER LOCATIONS, INSTALL THE STANDARD REPLACEMENT BOLTS. APPLY A 1/8 INCH BEAD OF GM ADHESIVE 12345493 TO THE BOLT THREADS BEFORE REASSEMBLY.

#### PART INFORMATION:

DESCRIPTION PART NUMBER ----------- ----------- EXHAUST MANIFOLD BOLT 15538420 ADHESIVE 12345493

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

#### WARRANTY INFORMATION:

LABOR OPERATION: T2540 LABOR TIME: 0.9 HOUR

FIGURES: 1

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 1994. GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.