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.
2012 Chevrolet Colorado 2WD L4-2.9LFACTORY OEM SERVICE PROCEDURE
Compression Check
COMPRESSION CHECK
Record the compression readings from all of the cylinders. A normal reading should be approximately 1482 kPa (215 psi).
The lowest reading should not be less than 70 percent of the highest reading.
Record the compression readings from all of the cylinders. A normal reading should be approximately 1482 kPa (215 psi).
The lowest reading should not be less than 70 percent of the highest reading.
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.