DIESEL TPS SETTING SERV.SPECS IMPROVE PERFORMANCE

SETTING OF THE THROTTLE POSITION SWITCH (TPS) ON 6.2L DIESEL LH6 ENGINES (L.D.), MUST BE CORRECT TO ASSURE PROPER ENGINE AND TRANSMISSION OPERATION. CHART (1) DISPLAYS THE SETTINGS TO USE FOR THE VARIOUS NATIONWIDE/ FEDERAL/CALIF., ENGINE TRANSMISSION CONFIGURATIONS. LOCATE THE PART NUMBER ON THE FACE OF THE SWITCH. REFER TO THE CHART COLUMN LISTING THAT PART NUMBER. USING THE OTHER VEHICLE PARAMETERS LISTED, A GAGE BAR SETTING CAN BE DETERMINED. THE 1982 LIGHT DUTY TRUCK SERVICE MANUAL ON PAGE 6C6-2 (FIGURE 6C6-4) DOES NOT SPECIFY THE DIMENSIONS OF THE GAGE BAR SETTINGS. REFERENCE IS MADE TO KENT-MOORE TOOLS AVAILABLE FOR THIS SETTING. CHART 1 1982 MODEL YEAR USAGE NATIONWIDE ALTITUDE ALL TRANS. MANUAL MODELS ALL THROTTLE POSITION SWITCH P/N 14050405 SWITCH CLOSED 0.646" SWITCH OPEN 0.668" GAGE P/N J-33043-2 USAGE FEDERAL ALTITUDE ALL TRANS. AUTO. MODELS ALL THROTTLE POSITION SWITCH P/N 14033943 SWITCH CLOSED 0.646" SWITCH OPEN 0.668" GAGE P/N J-33043-2 USAGE CALIF. ALTITUDE ALL TRANS. AUTO MODELS C/K 1500 P/U C/K 2500 P/U THROTTLE POSITION SWITCH P/N 14033943 SWITCH CLOSED 0.646" SWITCH OPEN 0.668" GAGE P/N J-33047-2 USAGE CALIF. ALTITUDE ALL TRANS. AUTO. MODELS C/K SUBURBAN K 1500 JIMMY THROTTLE POSITION SWITCH P/N 14050408 SWITCH CLOSED 0.602" SWITCH OPEN 0.624" GAGE P/N J-33043-4

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.