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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1423 (GENERAL INFORMATION)INTRODUCTIONENGINE AND TRANSMISSION USAGE (360 ENGINE AND TRANSMISSION USAGE)
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Engine and Transmission Usage (360 Engine and Transmission Usage)

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Engine and Transmission Usage (360 Engine and Transmission Usage)
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
Engine and Transmission Applications

Model Engine Transmission
Base Option Base Option
S155 (06,16)
T155 (06, 16)		 4.2L, V6, MFI, DOHC - 4L60E - Automatic, 4 speed -
Model Codes: S-Two-Wheel Drive and T-Four-Wheel Drive
06-Four-Door Utility
16-Two-Door Utility
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

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.