PARK BRAKE INDICATOR LAMP ILLUMINATES. GMC Truck GMC MD Conventional (C Model) 1990

SUBJECT: PARK BRAKE INDICATOR LAMP ILLUMINATES AND REMAINS ON (LUBRICATE VARIOUS LINKAGE PARTS)

MODELS: 1990-95 TOPKICK/KODIAK MODELS WITH JE3 HYDRAULIC BRAKES WITHOUT J71 POWER OPERATED PARKING BRAKE

CONDITION:

THE "PARK BRAKE" LAMP ILLUMINATES AND REMAINS ON.

CAUSE:

SOME OWNERS MAY EXPERIENCE THE PARK BRAKE LEVER ASSEMBLY PIN ACTUATOR HOLE AND LEVER FRAME PIN SLOTS WEARING DUE TO INSUFFICIENT LUBRICATION.

CORRECTION:

LUBRICATE THE LEVER ASSEMBLY PIVOT PIN, SLOT CLEVIS PIN, SLOTS AND PARKING BRAKE CABLE TO TRANSMISSION CLEVIS PIN ONCE A MONTH TO REDUCE THE AMOUNT OF ASSEMBLY WEAR. CHECK THE ADJUSTMENT OF THE PARKING BRAKE.

IMPORTANT: FREQUENT PARKING BRAKE OPERATION WILL REQUIRE LUBRICATION MORE OFTEN THAN ONCE A MONTH.

SERVICE PROCEDURE

1. APPLY A LIGHT COATING OF LUBRICANT, GM P/N 1052541 OR EQUIVALENT, TO THE PARKING BRAKE LEVER (FIGURE 1, ITEM 1), PIVOT PIN (FIGURE 1, ITEM 2), AND TO THE RH AND LH SIDE OF THE SLOT CLEVIS PIN (FIGURE 1, ITEM 3). 2. APPLY A LIGHT COATING OF THE SAME LUBRICANT TO THE PARKING BRAKE CABLE (FIGURES 2 AND 3, ITEM 1) CLEVIS PIN (FIGURES 2 AND 3, ITEM 2) LOCATED AT THE TRANSMISSION BRAKE. 3. CHECK ADJUSTMENT OF THE PARKING BRAKE. ADJUST, IF REQUIRED, FOLLOWING THE PROCEDURES PROVIDED IN THE APPLICABLE SERVICE MANUAL, UNDER SECTION 5F, PARKING BRAKE.

PARTS INFORMATION

P/N DESCRIPTION QTY 1052541 LUBRICANT - (25 GRAMS) 1

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

WARRANTY INFORMATION

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OP DESCRIPTION LABOR TIME H2800 LUBRICATE PARK BRAKE USE PUBLISHED LABOR OPERATION TIME

FIGURES: 3

CAPTIONS: FIGURE 1-PARK BRAKE LEVER ASSEMBLY FIGURE 2-PARK BRAKE CABLE TO TRANSMISSION BRAKE WITH MF1/MT9 FIGURE 3-PARK BRAKE CABLE TO TRANSMISSION BRAKE WITHOUT MF1/MT9

Object Number: 82776 Size: FS

Object Number: 94752 Size: SH

Object Number: 93592 Size: MF

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.