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.
2021 Chevrolet Trailblazer LFACTORY OEM SERVICE PROCEDURE
Engine Assembly: Remove, Install, and Overhaul
Includes: Replace Rings, Main and Rod Bearings, Camshaft(s), Crankshaft and Timing Components. Remove Cylinder ridge, burnish Cylinders, grind Valves and clean and test or replace Lifters.
Includes (where applicable): Adjust Valves. DOES NOT include Pin fit or rebore and align Rods. See machine operations.
| Applies To | Note | Standard Hours | Warranty Hours | Skill Level |
|---|---|---|---|---|
| 1.2L Eng | Includes: R&I Air Cleaner. Includes: R&I Battery and Tray. Includes: R&I Air Conditioning Compressor. Includes: R&I Muffler. Includes: R&I Subframe Assembly. Includes: R&I Axle Shafts. Includes: R&I Engine and Transmission Assembly. Includes: Reset Timing Belt Life Monitor Includes: Reset Oil Life Monitor. Includes: Drain and refill Cooling System. Includes: Drain and refill Transmission Fluid. Includes: Confirm Fluid temperature for level check. DOES NOT include Air Conditioning System recover, evacuate and recharge. DOES NOT include wheel alignment. | 26.8 | A |
Factory Service Tools
Use the Manual With the Right Hardware
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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.