Chevy_07

Hey everybody. Have an issue with something idk what tho. When accelerating around 1500 & 2200 rpm's I hear a distinct noise coming from the drivers side engine. Please help. My truck is to nice to make an annoying sound upon acceleration.

oldchevy

Need more info. What does it sound like? It could be pinging which can occur when accelerating hard. Do you use high octane gas?

Chevrolet Customer Service

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Please feel free to PM me if you prefer.

Louis
GM Customer Service

Chevy_07

It happens every now and then. But im not flooring it, its just steady. Alsi I find it to happen more when I just get in truck and go. Instead of letting it idle for like 5 minutes or so.

67Motorcat

The Cats could be getting "Loose" inside their shell.
That might explain why is does more when the truck is cold.The lower RPM harmonics can also come into play and vibrate them.

Knock on them with your hand and listen for the noise.

Chevy_07

Ok. And if I hear a noise, I should replace them?? I found a fix for this issue just browsing the internet obe day. Ill try an find that article and run it by you. I appreciate the help.