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.
2015 Chevrolet SS Automatic TransFACTORY OEM SERVICE PROCEDURE
Installation Procedure
- If reusing spark plugs, refer to Spark Plug Inspection .
- Hand start the spark plugs in the corresponding cylinders.
- Tighten the spark plugs. Tighten the engine spark plug on a NEW cylinder head to 20 N.m (15 lb ft) and the engine spark plug on subsequent installations to 15 N.m (11 lb ft).
- Install the spark plug wires. Refer to Spark Plug Wire Replacement .
- Install the engine cover. Refer to Engine Cover Replacement .
- If the left side spark plugs are being serviced, install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
NOTE:
If using NEW spark plugs, do NOT attempt to check gap. Plugs come pre-gapped.
CAUTION:
Refer to Fastener Caution .
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.