CARBURETOR FLOAT STABILIZER SPRING-ROUGH ROAD EFFECTS. GMC Truck S15 Pickup

SOME S-10 TRUCKS, BOTH TWO-WHEEL AND FOUR-WHEEL DRIVE, MAY STOP RUNNING UPON DRIVING OVER SEVERE ROUGH ROAD CONDITIONS SUCH AS PARKING LOT "SPEED BUMPS". TO MINIMIZE THE EFFECTS OF ROUGH ROADS ON THE FUEL LEVEL IN THE CARBURETOR, A STABILIZER SPRING CAN BE INSTALLED. THIS SPRING WILL MINIMIZE THE FUEL LEVEL VARIATION. THE ATTACHED LIST OF CARBURETOR PART NUMBERS DISPLAY THE VARIOUS COMPONENTS USED IN PRODUCTION. DETERMINE WHICH CARBURETOR IS IN THE VEHICLE AND REPAIR IF NECESSARY WITH PARTS AVAILABLE FROM TWO (2) KITS, P/N 7035156 AND P/N 17110227. 1. IF THE FUEL INLET SEAT LISTED FOR THE CARBURETOR IS NOT .120 IN. DIAMETER, INSTALL A NEW NEEDLE AND SEAT (KIT, P/N 7035156). 2. A LOWER BOWL INSERT, P/N 17073600, MUST BE INSTALLED IN PLACE OF THE PRODUCTION PART (P/N 17073600 IS INCLUDED WITH KIT, P/N 17110227. 3. A FLOAT ASSIST STABILIZER SPRING, P/N 17074354, MUST BE INSTALLED IF THE CARBURETOR DOES NOT HAVE ONE (INCLUDED WITH KIT, P/N 17110227) 4. WITH THE NEW COMPONENTS INSTALLED, SET THE MECHANICAL FLOAT LEVEL TO 3.50-4.25MM (4/32-5/32 INCH). 5. INSTALL NEW AIR HORN GASKET. REFER TO SERVICE MANUAL, SECTION 6C3 (CLOSED LOOP) OR 6C9 (OPEN LOOP) FOR PROCEDURES TO FOLLOW FOR PART INSTALLATION AND SETTING. 1982 MODEL YEAR MECH. FLOAT CARB. FLOAT STAB. LOWER BOWL FUEL INLET AIR HORN MODEL SETTING SPRING INSERT DIA. (IN.) GASKET KIT 17082348 7/16 NO 17071055 .120 17078011 17082349 7/16 NO 17071055 .120 17078011 17082350 7/16 NO 17071055 .120 17078011 17082351 7/16 NO 17071055 .120 17078011 17082353 7/16 NO 17071055 .120 17078011 17082355 7/16 NO 17071055 .120 17078011 17082356 13/32 NO 17071055 .120 17078048 17082357 13/32 NO 17071055 .120 17078048 17082358 13/32 NO 17071055 .120 17078048 17082359 13/32 NO 17071055 .120 17078048

1983 MODEL YEAR MECH. FLOAT CARB. FLOAT STAB. LOWER BOWL FUEL INLET AIR HORN MODEL SETTING SPRING INSERT DIA. (IN.) GASKET KIT 17083348 7/16 NO 17071055 .120 17079078 17083349 7/16 NO 17071055 .120 17079078 17083350 7/16 NO 17071055 .120 17079078 17083351 7/16 NO 17071055 .120 17079078 17083352 7/16 NO 17071055 .120 17079078 17083353 7/16 NO 17071055 .120 17079078 17083354 7/16 NO 17071055 .120 17079078 17083355 7/16 NO 17071055 .120 17079078 17083356 13/32 NO 17071055 .120 17078048 17083357 13/32 NO 17071055 .120 17078048 17083358 13/32 NO 17071055 .120 17078048 17083359 13/32 NO 17071055 .120 17078048 17083360 5/32 YES 17073600 .120 17079078 17083362 5/32 YES 17073600 .120 17079078 17083364 5/32 YES 17073600 .120 17079078 17083366 5/32 YES 17073600 .120 17079078

1984 MODEL YEAR MECH. FLOAT CARB. FLOAT STAB. LOWER BOWL FUEL INLET AIR HORN MODEL SETTING SPRING INSERT DIA. (IN.) GASKET KIT 17084348 11/32 NO 17071055 .100 17110032 17084349 11/32 NO 17071055 .100 17110032 17084350 11/32 NO 17071055 .100 17110032 17084351 11/32 NO 17071055 .100 17110032 17084352 11/32 NO 17071055 .100 17110032 17084353 11/32 NO 17071055 .100 17110032 17084354 11/32 NO 17071055 .100 17110032 17084355 11/32 NO 17071055 .100 17110032 17084356 9/32 NO 17071055 .100 17118048 17084357 9/32 NO 17071055 .100 17078048 17084358 9/32 NO 17071055 .100 17078048 17084359 9/32 NO 17071055 .100 17118048 17084360 5/32 YES 17073600 .120 17110032 17084362 5/32 YES 17073600 .120 17110032 17084364 5/32 YES 17073600 .120 17110032 17084366 5/32 YES 17073600 .120 17110032 17084368 4/32 YES 17073600 .120 17110276 17084370 4/32 YES 17073600 .120 17110276

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.