OEM parts categories for 1999 Gmc Yukon 4WD: Body Mounting, Air Conditioning, Audio/Entertainment (A/C & Heater Module Assembly, A/C Compressor Assembly, A/C Compressor Mounting, A/C Control System Electrical, A/C Module Assembly/Rear Auxiliary, A/C Refrigeration System, Air Distribution System-Rear, Air Distribution System/Instrument Panel, Antenna/Fixed, Audio System/Front, Audio System/Rear, Body Mounting, Cluster Assembly/Instrument Panel, Defogger/Rear Window, Lamp/Spotlight) | Brakes (Brake & Steering System-Hydraulic Lines, Brake Booster/Vacuum, Brake Caliper/Front, Brake Control Module, Brake Electrical System With 4 Wheel Anti-Lock, Brake Lines/Front, Brake Lines/Rear, Brake Master Cylinder, Brake Pedal & Master Cylinder Mounting, Parking Brake System, Wheel Cylinder/Drum Brake) | Brakes, Rear Axle, Propeller Shaft, Wheels, Tires (Axle Assembly/Rear, Axle Assembly/Rear Locking Differential, Brake Assembly/Rear Drum, Differential/Locking, Prop Shaft, Prop Shaft And Mounting, Prop Shaft Mounting-Front Auxiliary, Prop Shaft/Front-Auxiliary, Rear Axle Vent Hose, Skid Plates & Shields, Wheels & Wheel Covers) | Cab And Body Structure, Mirrors, Doors, Trim, Seat Belts, Wipers (Console/Floor, Console/Roof, Door Hardware/Rear, Door Hardware/Side Front, Door Hardware/Side Rear, Door Trim/Side Front, Door Trim/Side Rear, Entry System/Keyless Remote, Floor Covering & Sill Plates, Front Seat/Bench, Front Seat/Hi-Back Bucket-Driver, Front Seat/Hi-Back Bucket-Passenger, Front Seat/Low-Back Bucket-Driver, Front Seat/Low-Back Bucket-Passenger, Inflatable Restraint System, Instrument Panel & Related Parts, Lamp/Dome, Mirror/Inside Rear View, Mirror/Outside Rear View, Rear Seat/Folding Bench, Rear Seat/Folding-Side, Seat Belts-Rear, Seat Belts/Front, Seat/Split-Driver, Seat/Split-Passenger, Sheet Metal/Body Roof & Side, Sheet Metal/Body-Underbody, Engine Compartment, Sunshade/Illuminated, Trim/Interior-Body Side, Trim/Interior-Roof, Windshield & Windows, Wiper System/Rear Window, Wiper System/Windshield) | Cooling System, Grille, Oil System (Engine Block Heater & Related Parts, Engine Coolant Fan & Clutch, Engine Coolant Fan-Auxiliary, Engine Oil Cooler And Lines, Grille/Radiator, Pulleys & Belts/Accessory Drive, Radiator Assembly, Radiator Grille Guard, Radiator Hoses, Radiator Mounting & Related Parts) | Engine (Clutch, Clutch Linkage & Pedal, Engine & Transmission Mounting, Engine Assembly-Block & Related Parts, Engine Assembly-Cylinder Head & Related Parts, Engine Assembly-Front Cover & Cooling & Related Parts, Engine Assembly-Manifold, Turbo & Related Parts, Engine Assembly-Oil Pump, Pan & Related Parts, Engine To Transmission Mounting) | Frames, Springs, Shocks, Bumpers, Fascias (Bumper/Front, Bumper/Front & Grille Guard, Bumper/Rear, Frame, Spare Wheel Carrier, Springs/Rear, Stabilizer Shaft/Rear, Suspension/Rear, Trailer Hitch Platform) | Front Axle, Front Suspension, Steering (Differential Carrier/Front Axle, Drive Axle/Front, Steering Column-Standard, Steering Column/Tilt, Steering Gear Assembly, Steering Linkage, Steering Pump Assembly, Steering Pump Lines, Steering Pump Mounting, Steering System & Related Parts, Steering Wheel & Horn Parts, Suspension/Front, Vent Hose/Front Axle) | Front End Sheet Metal, Heater (Heater & Blower Assembly, Heater & Vent Control Cables & Harness, Heater Assembly Rear Auxiliary, Heater Control Assembly, Hoses & Pipes/Heater, Hoses & Pipes/Heater-Front, Hoses & Pipes/Heater-Rear, Jack & Tool Stowage, Labels, Lamps/Under Hood, Paint/Touch-Up, Running Board, Sheet Metal/Front End) | Fuel System, Exhaust, Emission System (A.I.R. Pump & Related Parts, A.I.R. Pump & Related Parts-Pump Assembly, Accelerator Control, Air Intake System, Control Module & Related Parts, Cruise Control, E.G.R. Valve & Related Parts, Exhaust System, Fuel Meter Body, Fuel Supply System-Front, Fuel Supply System-Rear, Fuel Tank And Mounting, Fuel Tank Filler Pipes & Hoses, Fuel Tank Sender, Heat Shields/Exhaust, Intake Manifold & Throttle Body, Throttle Body, Vapor Canister & Related Parts) | Maintenance Parts, Fluids, Capacities, Electrical Connectors (Normal Maintenance Replacement Parts) | Rear Body Structure, Moldings & Trim, Cargo Stowage (Bedliner/Pickup Box, Decals & Nameplates/Endgate, Endgate & Related Parts, Luggage Carrier, Moldings/Body, Pickup Box/Fleetside) | Starter, Generator, Ignition, Electrical, Lamps (Auxiliary Battery & Wiring, Backup Alarm, Battery Cables, Battery Mounting, Coil & Module/Ignition, Distributor/Ignition, Generator Assembly, Generator Mounting, Key & Lock Cylinders/Ignition, Lamp/High Mount Stop, Lamps/Fog, Lamps/Front - Composite, Lamps/Front - Single Headlamp, Lamps/Rear, Lamps/Roof, Spark Plug Wiring, Starter Motor, Wiring Harness Body-Front & Side, Wiring Harness Front, Wiring Harness Front Lamps With Connectors, Wiring Harness Front/Front Lamps With Connectors, Wiring Harness/Engine Connectors, Wiring Harness/Ground Straps, Wiring Harness/Oxygen Sensors & Heat Shields) | Transfer Case (Shift Control, Transfer Case, Transfer Case Adapter & Vent Hoses, Transfer Case-Internal Components) | Transmission - Automatic (Automatic Transmission Assembly, Automatic Transmission Auxiliary Accumulator Valve, Automatic Transmission Case & Related Parts & Park Lock Linkage, Automatic Transmission Clutch Gears, Automatic Transmission Control Valve, Automatic Transmission Oil Cooler Pipes, Automatic Transmission Oil Pump, Automatic Transmission Overrun Clutch, Automatic Transmission Valve Body, Frame/Transmission Supports, Shift Control, Transmission Auxiliary Oil Cooler, Transmission Filler Tube) | Transmission - Manual (Frame/Transmission Supports, Manual Transmission, Manual Transmission Main Gears, Shift Control)