Home / Chevrolet / Trailblazer / 2003 2003 Chevrolet Trailblazer Maintenance & Specs Everything you need to maintain your 2003 Chevrolet Trailblazer — oil specs, maintenance schedule, recalls, and more.
Oil Maintenance Fluids Parts Torque Value Costs TSBs The 2003 Chevrolet Trailblazer takes 5W-30 Full Synthetic with a total capacity of 5 quarts (filter included). Below you’ll find complete maintenance specs, fluid capacities, parts, and links to buy what you need.
Data last verified: May 3, 2026
Quick DIY Tips for the 2003 Chevrolet Trailblazer Always use 5W-30 Full Synthetic as specified by Chevrolet — using the wrong viscosity can void your powertrain warranty. Check the maintenance schedule below for your next service interval.
Maintenance schedule Choose interval 5,000 miles 7,500 miles 10,000 miles 15,000 miles 20,000 miles 30,000 miles 50,000 miles 60,000 miles 90,000 miles 100,000 miles Select a mileage interval above to see scheduled maintenance items.
Technical Service Bulletins297 All categories UNKNOWN OR OTHER POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT EQUIPMENT SUSPENSION STRUCTURE:BODY SEAT BELTS:REAR/OTHER VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE) POWER TRAIN STEERING:COLUMN EQUIPMENT:APPLIANCE:AIR CONDITIONER POWER TRAIN:AUTOMATIC TRANSMISSION POWER TRAIN:AXLE ASSEMBLY STRUCTURE:BODY:DOOR STEERING AIR BAGS:FRONTAL STRUCTURE:BODY:HATCHBACK/LIFTGATE ENGINE AND ENGINE COOLING:ENGINE EXTERIOR LIGHTING:HEADLIGHTS:HIGH/LOW BEAM DIMMER SWITCH EQUIPMENT:ELECTRICAL EXTERIOR LIGHTING:TAIL LIGHTS:SWITCH VISIBILITY:SUN/MOON ROOF ASSEMBLY VISIBILITY:POWER WINDOW DEVICES AND CONTROLS VISIBILITY:WINDSHIELD WIPER/WASHER:LINKAGES CHILD SEAT ELECTRICAL SYSTEM:IGNITION ELECTRICAL SYSTEM:12V/24V/48V BATTERY EXTERIOR LIGHTING:BRAKE LIGHTS VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:WINDSHIELD:ELECTRICAL HEATING ELEMENT ENGINE AND ENGINE COOLING:COOLING SYSTEM SERVICE BRAKES, HYDRAULIC EXTERIOR LIGHTING:TURN SIGNAL:FLASHER UNIT ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN POWER TRAIN:AUTOMATIC TRANSMISSION:COOLING UNIT AND LINES EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC. ELECTRICAL SYSTEM POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM) SEAT BELTS:FRONT:RETRACTOR FUEL SYSTEM, GASOLINE STRUCTURE ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS STRUCTURE:BODY:HATCHBACK/LIFTGATE:HINGE AND ATTACHMENTS EXTERIOR LIGHTING:TAIL LIGHTS ELECTRICAL SYSTEM:IGNITION:SWITCH ELECTRICAL SYSTEM:STARTER ASSEMBLY SEATS:FRONT ASSEMBLY:SEAT HEATER/COOLER VISIBILITY:WINDSHIELD WIPER/WASHER:MOTOR POWER TRAIN:DRIVELINE SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP ENGINE AND ENGINE COOLING EXTERIOR LIGHTING VEHICLE SPEED CONTROL:CRUISE CONTROL EXTERIOR LIGHTING:HEADLIGHTS SUSPENSION:FRONT VISIBILITY:REARVIEW MIRRORS/DEVICES:INTERIOR VISIBILITY:GLASS, SIDE/REAR SEAT BELTS:FRONT INTERIOR LIGHTING VISIBILITY:REARVIEW MIRRORS/DEVICES EQUIPMENT:MECHANICAL:CARRIER/RACK VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:FAN/MOTOR FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY VISIBILITY:REAR WINDOW WIPER/WASHER ENGINE AND ENGINE COOLING:EXHAUST SYSTEM STRUCTURE:BODY:HOOD SERVICE BRAKES, AIR:DISC:CALIPER VISIBILITY:WINDSHIELD WIPER/WASHER ELECTRICAL SYSTEM:HORN AIR BAGS EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL ELECTRICAL SYSTEM:STARTER ASSEMBLY:RELAY SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP POWER TRAIN:MANUAL TRANSMISSION SERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT SUSPENSION:REAR:SPRINGS:AIR SUSPENSION SYSTEM ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL SUSPENSION:REAR FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV) SEAT BELTS:FRONT:WARNING LIGHT/DEVICES SEATS:FRONT ASSEMBLY:HEAD RESTRAINT ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM)
020846008 UNKNOWN OR OTHER 2002-05-01
INFORMATION REGARDING THE ON-STAR MODULE COVER RETAINING TAB BREAKING. *TT
020421006 POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT 2002-07-01
SOME CUSTOMERS MAY COMMENT THAT THE 4WD/AWD INDICATOR LIGHTS ON THE SELECTOR SWITCH DO NOT WORK OR THE 4WD/AWD SYSTEM MAY BE INOPERATIVE. *TT
020730024A POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT 2005-08-01
DIAGNOSIS OF CRACKED OR BROKEN TRANSMISSION CASE. *TT 2006 AND PRIOR CARS AND LIGHT DUTY TRUCKS. *TT
Show all 297 TSBs(+294 more)
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