SMU-SECT. 6E ENG CONT REV. PCM MESSAGE & TACH. Cadillac DeVille 1996

SUBJECT: SERVICE MANUAL UPDATE - SECTION 6E - ENGINE CONTROLS REVISED PCM MESSAGE AND TACHOMETER DIAGNOSIS

MODELS: 1996 CADILLAC CONCOURS, DEVILLE, ELDORADO, SEVILLE WITH 4.6L ENGINE (VINS Y, 9 - RPOS LD8, L37)

THIS BULLETIN IS BEING ISSUED TO ADD THE FOLLOWING DIAGNOSTIC INFORMATION TO THE ENGINE CONTROLS SECTION:

* PCM MESSAGE DIAGNOSIS - LOW ENGINE OIL LEVEL MESSAGE * PCM MESSAGE DIAGNOSIS - LOW OIL PRESSURE MESSAGE * PCM CONTROLLED TACHOMETER DIAGNOSIS

THIS DIAGNOSTIC INFORMATION WAS NOT INCLUDED IN THE 1996 E/K SERVICES INFORMATION.

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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.