INFO. ON PREDELIVERY REPOST. OF COOLANT RESERVOIR HOSE. GMC Truck S15 Pickup - 2WD 1994

For 1990-2009 cars

# INFO. ON PREDELIVERY REPOST. OF COOLANT RESERVOIR HOSE

#### SUBJECT: INFORMATION ON PREDELIVERY REPOSITIONING OF COOLANT RESERVOIR OVERFLOW HOSE

#### MODELS: 1994 CHEVROLET AND GMC TRUCK S/T PICKUPS BUILT AFTER THE FOLLOWING VIN BREAKPOINTS:

PLANT DIV VIN LINDEN CHEVROLET K106163 THROUGH PRESENT LINDEN GMC K501791 THROUGH PRESENT SHREVEPORT CHEVROLET 8110507 THROUGH PRESENT SHREVEPORT GMC 8502314 THROUGH PRESENT

DURING TRANSPORTATION FROM THE ASSEMBLY PLANT, ENGINE COOLANT MAY LEAK FROM THE ENGINE COOLANT RESERVOIR OVERFLOW HOSE.

TRUCK MOVEMENT AND SHAKING DURING TRANSPORTATION FROM THE ASSEMBLY PLANT TO THE DEALER, MAY FORCE ENGINE COOLANT OUT THROUGH THE ENGINE COOLANT RESERVOIR OVERFLOW HOSE.

BEGINNING SEPTEMBER 17, 1993 THE LINDEN, NEW JERSEY AND SHREVEPORT, LOUISIANA ASSEMBLY PLANTS REPOSITIONED THE ENGINE COOLANT RESERVOIR OVERFLOW HOSE IN A VERTICAL POSITION. THIS IS A TEMPORARY MODIFICATION UNTIL AN ENGINEERING CHANGE IS DEVELOPED. WHEN THE TRUCK IS RECEIVED AT THE DEALER, IT IS ESSENTIAL THAT THIS HOSE (FIGURE 1, ITEM 1) IS MOVED TO ITS PRODUCTION INTENT POSITION PER TAG ATTACHED TO THE OVERFLOW HOSE. THE REPOSITIONING IS NECESSARY TO AVOID A POTENTIAL INCIDENT THAT COULD RESULT IN INJURY OR VEHICLE DAMAGE SHOULD THE ENGINE OVERHEAT.

THE FOLLOWING IS THE PROCEDURE TO CORRECTLY REPOSITION THE OVERFLOW HOSE. THIS PROCEDURE IS ALSO LISTED ON THE TAG ATTACHED TO THE OVERFLOW HOSE.

1. REPOSITION THE HOSE OUTLET DOWNWARD, ON THE ENGINE SIDE OF THE FRAME RAIL, IN FRONT OF THE POSITIVE BATTERY CABLE (FIGURE 1, ITEM 2) AND REARWARD OF THE LOWER RADIATOR HOSE (FIGURE 1, ITEM 3.)

2. TIE WRAP THE HOSE TO THE BATTERY CABLES AT THE REAR CORNER OF THE BATTERY TRAY (FIGURE 1, ITEM 4).

TRUCKS SHIPPED AFTER SEPTEMBER 17, 1993 HAVE THE HOSE POSITIONED VERTICALLY BY THE ASSEMBLY PLANTS.

AS SOON AS THE ENGINEERING CHANGE HAS BEEN DEVELOPED, A SERVICE BULLETIN WILL BE PUBLISHED DESCRIBING THIS CHANGE.

#### WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OP DESCRIPTION LABOR TIME J3180 TUBE, OVERFLOW USE PUBLISHED LABOR OPERATION TIME

FIGURES: 1

CAPTIONS: FIGURE 1 - COOLANT RESERVOIR OVERFLOW HOSE

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.