SMU - SEC. 0/0C - VIBRATION DIAGNOSIS - REVISED PROPELLER. Chevrolet Astro

SUBJECT: SERVICE MANUAL UPDATE - SECTION 0/0C - VIBRATION DIAGNOSIS - REVISED PROPELLER SHAFT RUNOUT SPECIFICATIONS

MODELS: 1993-98 CHEVROLET AND GMC M/L MODELS

THIS BULLETIN REVISES THE PROPELLER SHAFT RUNOUT SPECIFICATIONS FOR THE FOLLOWING M/L SERVICE MANUALS:

MODEL YEAR SECTION/PAGE NUMBER ---------- ------------------- 1998 0-57 1997 0C-11 1996 0C-10 1995 0C-10 1994 0C-11 1993 0C-11

PROPELLER SHAFT RUNOUT SPECIFICATIONS

MAXIMUM RUNOUT SPECIFICATIONS MEASURING POINTS METRIC ENGLISH ---------------- ----------------------------- M-VAN FRONT 0.60 MM 0.024 IN. CENTER 0.60 MM 0.024 IN. REAR 0.60 MM 0.024 IN.

L-VAN FRONT 1.02 MM 0.040 IN. CENTER 0.79 MM 0.031 IN. REAR 1.02 MM 0.040 IN.

FIGURES: 00 ATTACHMENTS: 00

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.