CARBURETOR SPECIFICATIONS OMITTED FROM SERVICE MANUAL

The mixture control solenoid plunger adjustment chart referred to on pages 6C1-10 and 6C1-11 of the 1982 Service Manual was inadvertently omitted from the specifications section at the end of the chapter. The following information was left out:

Plunger # Turns # Turns Turns Lean To Set Idle *Preset Idle Mixture Screw Air Bleed Valve Mixture Needle ------------- --------------- --------------- If Not Adjust Between To ------- -- 3 1/4-3 3/4 3 1/2 4 3/4 4

*On Car Adjustment

Also, the 1982 adjustment specifications chart on page 6C1-31, Figure 6C1-66, has been revised as follows:

Carb. No. 17082246 (C) 17082247 (E,K) --------- ------------ -------------- Float Level MM 9.2mm 9.2mm Inches 3/8 3/8 Fast Idle Cam (Choke Rod) 24.5 DEG 18 DEG Air Valve Rod .025 .025 Vac. Break Primary 26 DEG 26 DEG Vac. Break Secondary 26 DEG 26 DEG Unloader 32 DEG 32 DEG Air Valve Wind-Up (Turns) 5/8 5/8 ISC Adjustments Base (Slow) Idle Stop 450 450 Screw (Minimum Idle Set) (ISC Fully Retracted) ISC Adjustment RPM 900 900 (ISC Fully Extended)

The Throttle Position Sensor (TPS) adjustment specification (referred to in step "f" of the "Throttle Position Sensor [TPS] adjustment" on pages 6C1-11 through 6C1-12 in the 1982 Service Information Manual) is .97 volts at the high step of the fast idle cam.

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.