What is the metallic grinding/popping sound?
My 2011 Avalanche (45000 miles) has a metallic grinding/popping sound (almost like a rock in a tin can) at very very slow speeds (coming from the front left). It happens going straight or turning, forward or reverse, 2wd or 4wd. It appears to happen once every wheel revolution. It does not appear at higher speeds. Any ideas?...CV joints?
My first thought would be a bad CV joint. Have you looked under your vehicle yet? Check the rubber boots. They like to split open and sling all of the grease out. They then become dry and start making noise. Also take off your front tire and inspect your front brake pads. You may have the drag bars hitting against your rotor if your pads are worn down. Should be something simple if the vehicle only has 45K.
Reeline68: Thanks for your reply, I had looked at the boots and they seemed to be okay (no grease etc.). This problem just occurred in the last 24 hrs so I haven’t had the time to do much more about it. The brakes are definitely a possibility, but they don’t make a noise when braking, maybe there’s a pebble jammed in around the caliper somewhere (I drive on gravel roads often). I’ll get it checked out…thanks.
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