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 4WD L4-2.9LFACTORY OEM SERVICE PROCEDURE
Connecting Rod, Engine
Connecting Rod Nut/Bolt Torque
Connecting Rod Cap Bolt
First Pass 25 Nm (18 lb ft)
Final Pass 110 degrees
Connecting Rod Side Clearance, Out-of-round & Diameter
Connecting Rod Side Clearance 0.05-0.35 mm (0.0019-0.0137 in)
Connecting Rod Bore Out-of-Round - Bearing End 0.006 mm (0.0002 in)
Connecting Rod Bore Diameter - Bearing End 60.322-60.338 mm (2.3749-2.3755 in)
Connecting Rod Cap Bolt
First Pass 25 Nm (18 lb ft)
Final Pass 110 degrees
Connecting Rod Side Clearance, Out-of-round & Diameter
Connecting Rod Side Clearance 0.05-0.35 mm (0.0019-0.0137 in)
Connecting Rod Bore Out-of-Round - Bearing End 0.006 mm (0.0002 in)
Connecting Rod Bore Diameter - Bearing End 60.322-60.338 mm (2.3749-2.3755 in)
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.
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