An engine camshaft helps control valve timing so your Chevrolet, GMC, or Buick engine can breathe, idle, accelerate, and run correctly. If your vehicle has rough idle, ticking noises, misfires, poor power, or camshaft-related trouble codes, the camshaft and related valve train parts may need inspection. Always confirm fitment by VIN before ordering engine camshafts or related GM engine parts.

Engine Camshafts for Chevrolet, GMC, and Buick Vehicles

The camshaft is a critical internal engine component. It works with parts like lifters, valves, timing components, camshaft bearings, seals, and sensors to keep the engine operating in the correct sequence. When a camshaft wears or fails, the symptoms can feel like ignition, fuel, or timing problems, which is why diagnosis matters before ordering parts.

Gateway Parts Online helps GM owners find OEM engine parts by vehicle, keyword, part number, and fitment details. If you are replacing a camshaft, make sure the repair is based on confirmed engine diagnosis, not just a symptom match.

What This Category Includes

GM engine camshaft parts for select Chevrolet, GMC, and Buick applications
Exhaust and intake camshaft options when available
OEM engine camshafts for internal engine repairs
Camshaft-related components that may vary by engine, year, and trim
Parts that should be matched to the vehicle’s exact engine code and VIN

If No Engine Camshaft Results Are Available

If this category has limited results or does not show the exact part you need, check related GM engine categories. Useful options include engine parts, timing parts, gaskets, oil filters, and maintenance parts. You can also contact Gateway Parts Online with your VIN for help confirming the correct camshaft.

Why Genuine GM OEM Parts Matter

Camshaft fitment is not an area where guessing pays off. The camshaft must match the engine design, timing setup, valve train, sensors, and internal clearances. Genuine GM OEM parts are designed around factory requirements, which helps support proper fit, correct operation, and repair confidence. For example, this GM engine camshaft 12675774 may be the right part for select applications, but fitment should always be checked before ordering.

How to Choose the Right Engine Camshaft

Start with the diagnosis. Rough idle, misfires, ticking, loss of power, poor fuel economy, or camshaft position codes can point toward several possible issues. Before replacing the camshaft, inspect related systems such as ignition parts, fuel delivery, oil pressure, timing components, sensors, and valve train wear.

Once the camshaft is confirmed as the repair target, match the part by VIN, engine code, model year, and whether the repair calls for an intake or exhaust camshaft. Also review whether related parts such as lifters, seals, gaskets, timing components, or camshaft bearings should be replaced during the same repair.

GM Fitment Guidance: VIN, Trims, and Engine Details

Use your VIN before ordering an engine camshaft. Chevrolet, GMC, and Buick vehicles can vary by engine family, turbocharged or naturally aspirated design, emissions equipment, trim, production date, and transmission pairing. A camshaft that looks similar may not match the required profile or fit your exact engine correctly.

Internal Links for Chevrolet, GMC, and Buick Owners

FAQ

What does an engine camshaft do?

The camshaft helps open and close the engine’s valves at the correct time. This supports airflow, combustion, idle quality, acceleration, and overall engine performance.

What are signs of a bad camshaft?

Possible signs include rough idle, misfires, ticking noises, poor acceleration, reduced fuel economy, check engine lights, or metal debris in the oil.

Can I replace only the camshaft?

It depends on the diagnosis. Some repairs may also require lifters, gaskets, seals, timing components, oil system checks, or camshaft bearings.

How do I know if GM engine camshaft 12675774 fits my vehicle?

Use your VIN, engine details, model year, and trim to confirm fitment before ordering. Camshaft parts can vary even between similar GM vehicles.

Should a camshaft replacement be done by a professional?

In most cases, yes. Camshaft replacement is an internal engine repair that requires correct timing, careful inspection, and proper installation procedures.