OEM parts categories for 1986 Gmc K3500: Body Mounting, Air Conditioning, Audio/Entertainment (A/C & Heater Control Assembly, A/C & Heater Module Assembly, A/C & Heater Module Assembly/Rear Air, A/C Compressor Assembly, A/C Compressor Mounting, A/C Control System/Vacuum & Electrical, A/C Evaporator Assembly & Blower, A/C Refrigeration System, Air Distribution System/Instrument Panel, Air Distribution System/Plenum, Audio System, Body Mounting, Lamp/Cargo) | Brakes (Brake Booster/Hydraulic, Brake Booster/Vacuum, Brake Caliper/Front, Brake Master Cylinder, Brake System, Brake System/Diesel, Parking Brake System) | Brakes, Rear Axle, Propeller Shaft, Wheels, Tires (Axle Assembly/Rear, Axle Assembly/Rear Locking Differential, Brake Assembly/Rear Drum, Differential/Locking, Prop Shaft/Front-Auxiliary, Rear Axle Vent Hose, Wheels & Wheel Covers) | Cab And Body Structure, Mirrors, Doors, Trim, Seat Belts, Wipers (Compartment/Seat Separator, Door Hardware & Trim/Side Rear, Door Hardware/Side Front, Door Hardware/Side Rear, Door Trim/Side Front, Floor Covering & Sill Plates, Front Seat/Bench, Instrument Panel & Related Parts, Lamp/Dome, Mirror/Outside Rear View, Moldings/Garnish & Roof Trim, Moldings/Roof Drip, Power Window & Door Lock System, Rear Seat/Bench, Seat/Bench, Seat/Bucket, Sheet Metal/Body, Sheet Metal/Body Side & Roof, Sunshade, Wiper System/Windshield) | Cooling System, Grille, Oil System (Engine Block Heater & Related Parts, Engine Cooling System-Auxiliary Cooling Fan, Engine Oil Cooler, Engine Oil Cooler Lines & Related Parts, Engine Oil Pressure & Temperature Switches, Grille/Radiator, Hoses & Pipes/Radiator, Pulleys & Belts/Accessory Drive, Radiator Assembly, Radiator Mounting & Related Parts) | Engine (Clutch Assembly/Diaphragm Spring Type, Clutch Linkage, Engine & Transmission Mounting, Engine Assembly & Partial Engine, Engine To Transmission Mounting) | Frames, Springs, Shocks, Bumpers, Fascias (Bumper/Front, Bumper/Rear Step, Spare Wheel Carrier/Frame Mounted /Glide-Out, Spare Wheel Carrier/Side Mounted, Suspension/Front, Suspension/Rear) | Front Axle, Front Suspension, Steering (Axle Assembly/Front, Hub Assembly/Locking-Automatic, Steering Column-Non Tilt Floor Shift, Steering Column/Key Release Tilt Wheel, Steering Column/Non-Tilt Column Shift, Steering Column/Tilt Wheel, Steering Gear Assembly, Steering Linkage, Steering Pump Assembly, Steering Pump Mounting & Lines, Steering System & Related Parts, Steering Wheel & Horn Parts, Vent Hose/Front Axle & Related Parts) | Front End Sheet Metal, Heater (Heater & Blower Assembly, Heater Control Assembly, Hoses & Pipes/Heater & Related Parts, Jack & Tool Stowage, Sheet Metal/Front End) | Fuel System, Exhaust, Emission System (Accelerator Control, Accelerator Control Engine Compartment, Accelerator Control Pedal & Rod, Air Intake System, Cruise Control, Emission Controls, Exhaust System, Fuel Filter, Fuel Injection System, Fuel Supply System, Fuel Supply System-Rear, Fuel Tank & Filler Pipe, Fuel Tank & Supply, Injection Pump/Fuel) | Maintenance Parts, Fluids, Capacities, Electrical Connectors (Normal Maintenance Replacement Parts) | Rear Body Structure, Moldings & Trim, Cargo Stowage (Moldings, Pickup Box/Fleetside, Pickup Box/Stepside, Stripes) | Starter, Generator, Ignition, Electrical, Lamps (Back-Up Lamp Switch & Related Parts, Battery Cables & Related Parts, Distributor/Ignition, Generator Assembly, Generator Mounting, Lamp Sockets/Exterior, Lamps/Front, Lamps/Rear, Lamps/Roof, Starter Motor) | Transfer Case (Shift Control, Transfer Case, Transfer Case Adapter) | Transmission - Automatic (Automatic Transmission Case & Related Parts, Automatic Transmission Clutch Gears, Automatic Transmission Control Valve, Automatic Transmission Oil Cooler Pipes, Automatic Transmission Oil Pump, Automatic Transmission Parking Lock Linkage, Shift Control) | Transmission - Manual (Manual Transmission Case & Related Parts, Shift Control)