Two problems related to engine clicking and tapping noises have been reported for the 2007 Chevrolet Suburban. The most recently reported issues are listed below.
I was driving the vehicle in motion when out of no where the engine started making a loud thumping crackling sound.
While driving on the highway I started hearing ticking noise from engine compartment and the stablizing light and check engine light started flashing. I shut off the Suburban and went to look under the hood. Started it back up and went back to listen again, still the same ticking. Chevy will not stand behind there bad afm which is causing this issue.