INFO. ON THROTTLE BODY & THROTTLE CABLE REVISIONS. GMC Truck Jimmy

REVISION: 05/21/98 DIVS INVL 1 3 5 7

THIS BULLETIN IS BEING REVISED TO CORRECT A THROTTLE BODY PART NUMBER. PLEASE DISCARD CORPORATE SERVICE BULLETIN 77-65-10 (SECTION 6E-ENGINE FUEL AND EMISSION). ______________________________________________________________________ SUBJECT: INFORMATION ON THROTTLE BODY AND THROTTLE CABLE REVISIONS

MODELS: 1997 CHEVROLET AND GMC M/L, S/T MODELS 1997 OLDSMOBILE BRAVADA WITH 4.3L V6 ENGINES (VINS W, X - RPOS L35, LF6)

A 1997 MID-MODEL YEAR PRODUCTION CHANGE INVOLVING THE THROTTLE BODY AND ACCELERATOR CABLE HAS OCCURRED ON THE ABOVE IDENTIFIED VEHICLES.

WHEN REPLACING THE THROTTLE BODY OR THE ACCELERATOR CABLE, THE CORRECT COMPONENTS MUST BE USED (SEE TEXT BELOW).

IMPORTANT: THE USE OF AN INCORRECT ACCELERATOR CABLE WILL RESULT IN: - A RAISED IDLE SPEED (ACCELERATOR CABLE TOO SHORT) OR - INABILITY TO OBTAIN W.O.T. (ACCELERATOR CABLE TOO LONG).

THE THROTTLE CABLE CAM ON THE THROTTLE BODY HAS BEEN RE-DESIGNED. THIS CHANGE CAUSES THE THROTTLE BLADE TO OPEN SOONER FOR A GIVEN THROTTLE POSITION.

THIS PRODUCTION CHANGE OCCURRED DURING 1997 VEHICLE PRODUCTION IN MID-OCTOBER, 1996. THE FOLLOWING VIN BREAKPOINTS HAVE BEEN ESTABLISHED:

ASSEMBLY PLANT VIN'S (VEHICLE) DIVISION FROM - THROUGH -------------- --------- ---------------------------- BALTIMORE CHEVROLET 1997 SOP - 1GNDM19W1VB142735 (M/L VAN) GMC " " - 1GKEL19W8VB515340

LINDEN CHEVROLET 1997 SOP - 1GCDT19X8VK136001 (S/T) GMC " " - 1GKDT13W6VK503742

MORAINE CHEVROLET 1997 SOP - 1GNCS13W5V2132977 (S/T) GMC (USA) " " - 1GKCS13W4V2513104 GMC (CANADA) " " - 1GKCS13W2V2513103 OLDSMOBILE " " - 1GHDT13W7V2704636

SHREVEPORT CHEVROLET 1997 SOP - 1GCCS19X5V8124738 (S/T) GMC " " - 1GTCS14X1V8508281

THE USE OF THE NEW THROTTLE BODY REQUIRES A DIFFERENT ACCELERATOR CABLE.

WHEN ORDERING SERVICE PARTS, DETERMINE WHICH THROTTLE BODY THE ENGINE HAS. THE CORRECT ACCELERATOR CABLE MUST BE USED.

A BAR CODE LABEL (2) ON THE FRONT OF THE THROTTLE BODY (1) SHOWS THE LAST FOUR (4) DIGITS OF THE THROTTLE BODY PART NUMBER (SEE FIGURE 1 BELOW).

(INSERT TPOL3102 HERE)

FIGURE 1 THROTTLE BODY IDENTIFICATION

1 - THROTTLE BODY 2 - BAR CODE LABEL LOCATION

ACCELERATOR CABLES (1) HAVE THE PART NUMBER STAMPED IN THE CABLE (SEE FIGURE 2 BELOW).

(INSERT TPOL3104 HERE)

FIG. 2 THROTTLE BODY AND ACCELERATOR CABLE

1 - ACCELERATOR CABLE 2 - THROTTLE BODY

PARTS INFORMATION: PARTS ARE CURRENTLY AVAILABLE FROM GMSPO. THE CHART BELOW SHOWS WHICH ACCELERATOR CABLE SHOULD BE USED WITH EACH THROTTLE BODY.

MODEL THROTTLE ACCELERATOR VEHICLE YEAR(S) BODY P/N CABLE P/N ------- --------- -------- ----------- S/T EARLY 1997 17096175 15733071 LATE 1997 17113334 15151057

M/L EARLY 1997 17096175 15735731 LATE 1997 17113334 15153422

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR LABOR LABOR CODE OPERATION VEHICLE TIME ----- --------------------- ------- -------- J5350 REPLACE ACCELERATOR S/T 0.4 HRS. CABLE M/L 0.4 HRS.

J5490 REPLACE THROTTLE S/T 0.7 HRS. BODY (INCL. TRANSFER M/L 0.8 HRS. OF PARTS)

FUTURE LABOR TIME GUIDES WILL BE UPDATED.

FIGURES: 2 ATTACHMENTS: 0

Object Number: 169229 Size: SH

Object Number: 169230 Size: SH

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.