Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1423 (GENERAL INFORMATION)INTRODUCTIONVEHICLE IDENTIFICATION
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Vehicle Identification
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Vehicle Identification
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.
The vehicle identification number (VIN) plate (1) is the legal identifier of the vehicle. The VIN plate is located on the upper LH corner of the Instrument Panel and can be seen through the windshield from the outside of the vehicle:
Vehicle Identification Number (VIN) System
| Position | Definition | Character | Description |
|---|---|---|---|
| 1 | Country of Origin | 1,4 | U.S. Built |
| 2 | Manufacturer | G | General Motors |
| 3 | Make | C H K N T |
Chevrolet Truck Oldsmobile MPV GMC MPV Chevrolet MPV GMC Truck |
| 4 | GVWR/Brake System | D E |
5001-6000/Hydraulic 6001-7000/Hydraulic |
| 5 | Truck Line/Chassis Type | S T |
Sm Conventional Cab-4x2 Sm Conventional Cab-4x4 |
| 6 | Series | 1 | 1/2 Ton Nominal |
| 7 | Body Type | 3 6 |
GMT 360 GMT 370 |
| 8 | Engine Type | S P |
GM 4.2L L6 MFI (LL8) GM 5.3L V8 SFI (LM4) |
| 9 | Check Digit | - | Check Digit |
| 10 | Model Year | 4 | 2004 |
| 11 | Plant Location | K 2 X 6 |
Linden, NJ Moraine E.E.M.S. Oklahoma City |
| 12-17 | Plant Sequence Number | - | Plant Sequence Number |
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.