INFO. ON NEW LO AND REVERSE SUPPORT TO CASE RETAINER RING. GMC Truck GMC K Pickup

SUBJECT: INFORMATION ON NEW LO AND REVERSE SUPPORT TO CASE RETAINER RING

MODELS: 1994 BUICK ROADMASTER 1994 CADILLAC FLEETWOOD 1994 CHEVROLET CAPRICE, CAMARO, CORVETTE 1994 PONTIAC FIREBIRD

1994 CHEVROLET AND GMC C/K, S/T TRUCKS AND M/L, G VANS 1994 OLDSMOBILE BRAVADA

TRANSMISSION APPLICATIONS: 1994 HYDRA-MATIC 4L60-E (RP0 M30)

BULLETIN COVERS: (FIGURE 1) NEW PRODUCT INFORMATION FOR 1994 HYDRA-MATIC 4L60-E TRANSMISSIONS. AN ENHANCED LO AND REVERSE SUPPORT TO CASE RETAINER RING (ILL. 676) HAS BEEN RELEASED. THE NEW LO AND REVERSE SUPPORT TO CASE RETAINER RING HAS BEEN ENHANCED TO CONTACT THE CASE RING GROOVE AROUND THE ENTIRE RING. THIS WILL ULTIMATELY IMPROVE THE RETENTION OF THE RING. ALSO, THE LO AND REVERSE SUPPORT TO CASE RETAINER RING MUST BE LOCATED WITH THE OPENING IN THE FIVE O'CLOCK POSITION AS SHOWN IN FIGURE 1.

NOTE: THE GMC BULLETIN NO. 367106 AUTOMATIC TRANSMISSION SERVICE PROCEDURE, WILL REMAIN IN EFFECT FOR GMC TRUCKS ONLY.

DATE OF PRODUCTION CHANGE: ON AUGUST 08, 1993 THE HYDRA-MATIC 4L60-E TRANSMISSIONS WERE BUILT WITH THE NEW LO AND REVERSE SUPPORT TO CASE RETAINER RING.

SERVICE PARTS INFORMATION: PARTS ARE EXPECTED TO BE AVAILABLE ON FEBRUARY 28, 1994.

PART NUMBER PART NAME ----------- --------- 24200278 LO AND REVERSE SUPPORT TO CASE RETAINER RING

THE NEW LO AND REVERSE SUPPORT TO CASE RETAINER RING CAN ALSO BE USED FOR 1982-1993 HYDRA-MATIC 4L60 AND 4L60-E TRANSMISSIONS.

FIGURES: 1

Object Number: 83022 Size: FS

GENERAL MOTORS BULLETINS ARE INTENDED FOR USE BY PROFESSIONAL TECHNICIANS, NOT A "DO-IT-YOURSELFER." THEY ARE WRITTEN TO INFORM THOSE TECHNICIANS OF CONDITIONS OCCURRING 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 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.