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
Grind Complete
Includes: Remove carbon, check surfaces for warpage, reface or replace Valves, resurface Valve Seats and clean Valve Guides. Adjust Valves (where applicable).
| Applies To | Note | Standard Hours | Warranty Hours | Skill Level |
|---|---|---|---|---|
| 1.2L Eng | Includes: R&I Subframe Assembly. Includes: R&I Engine and Transmission Assembly. Includes: R&I Camshaft Cover w/Turbocharger together as an assembly. Includes: R&I Fuel Rail. Includes: R&I Fuel Injectors. Includes: R&I Camshafts. Includes: Drain and refill Cooling System. Includes: Drain and refill Transmission Fluid. Includes: Confirm Fluid temperature for level check. Includes: Drain and refill Engine Oil. Includes: Reset Oil Life Monitor. DOES NOT include Air Conditioning System recover, evacuate and recharge. DOES NOT include wheel alignment. | 19.1 | A | |
| Combination Procedure: AIR INTAKE SYSTEM: Reset: | ||||
| 1.2L Eng, Intake System Learned Values Reset | Includes: Additional time for use of scan tool to perform this procedure. | 0.2 | B | |
| Combination Procedure: VALVE LIFTERS (REMOVED): Clean: | ||||
| Each Additional | 0.1 | B | ||
| One | 0.2 | B | ||
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.