That sound is the anti-lock braking system doing a "self-check".I got a 06 ridgeline with 77k miles on it. It now makes a popping sound between 10 and 15 mph. Only does this once the truck is turned on and will only repeat if I shut all the way off and restart. Any ideas?
Doesn't seem like it's a shifting thing because it does it way before I feel it shift from 1st to 2nd.
Nothing to worry about, and it is not transmission related.