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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1391 (DATA LINK COMMUNICATION SYSTEM)COMPONENT LOCATORDATA LINK COMMUNICATIONS COMPONENT VIEWS
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Data Link Communications Component Views

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Data Link Communications Component Views
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.
Fig 1: Data Link Connector (DLC) and Splice Pack SP205
GM747277Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Data Link Connector
2 Splice Pack SP205
Fig 2: Splice Pack SP306
GM747280Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Splice Pack SP306
2 Rear Floor Panel
3 Body Harness
RENDER: 1.0x

NO RELATED

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

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  • • 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.