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.
Model Identification
Vehicle model is identified by fifth character (G) of Vehicle Identification Number (VIN). VIN is stamped on metal pad on top of left end of instrument panel, near windshield.
This article only covers removal, overhaul and installation procedures for gasoline components. Many of these components are also installed on bi-fuel vehicles. For removal, overhaul and installation procedures for alternate fuel systems and components on bi-fuel vehicles, see REMOVAL, OVERHAUL & INSTALLATION - CHEVY EXPRESS & SAVANA - BI-FUEL article. For vehicles equipped with diesel engines, see diesel removal, overhaul and installation article.
Engine size is identified by eighth character of Vehicle Identification Number (VIN). VIN is stamped on metal pad on top of left end of instrument panel, near windshield. See ENGINE IDENTIFICATION table.
| VIN ID | (1) Engine Size | ||||
|---|---|---|---|---|---|
| "W" | 4.3L | ||||
| "M" | 5.0L | ||||
| "R" (2) | 5.7L | ||||
| "G" | 8.1L | ||||
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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.