Here's why:
* GM has produced a vast variety of engines over the years. Some are interference, while others are non-interference.
* Interference vs. Non-Interference:
* Interference engines: Valves and pistons can collide if the timing belt/chain breaks, causing serious damage.
* Non-interference engines: Even if the timing belt/chain breaks, the valves and pistons are designed to avoid contact, limiting damage.
To find out if your specific GM engine is interference or non-interference:
1. Check your owner's manual. It should contain this information.
2. Look up your engine code online. Many websites offer engine code databases that can tell you if your engine is interference or non-interference.
3. Consult a mechanic. They can tell you based on your engine model and year.
Knowing whether your engine is interference or non-interference is crucial for maintenance. If it's interference, regular timing belt/chain replacement is essential to prevent catastrophic engine failure.
