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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 203 (ENGINE CONTROLS - SERVICE & ADJUSTMENT SPECIFICATIONS)QUICK-SERVICESERVICE INTERVALS & SPECIFICATIONS
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Service Intervals & Specifications

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Service Intervals & Specifications
WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
REPLACEMENT INTERVALS

Component Miles
Air Filter 30,000
Accessory Drive Belt (1)
Automatic Transaxle Fluid (2) 100,000
Engine Coolant (3) 100,000
Fuel Filter 100,000
Manual Transaxle Fluid (4)
Oil & Filter (5)
Passenger Compartment Filter 12,000
Spark Plugs 100,000
Timing Belt (3.0L) 100,000
(1) Check and replace as necessary.
(2) If used under severe service conditions, replace every 50,000 miles.
(3) Use only DEX-COOL® coolant or equivalent silicate-free coolant.
(4) Periodic replacement is not required.
(5) If used under severe conditions, replace every 3000 miles. If used under normal conditions, replace as indicated by CHANGE OIL SOON light or every 6 months, whichever comes first.
RENDER: 1.0x

NO RELATED

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.