cruser7

I found my propane smell, and fixed it. Coming from the front differential vent. I changed the fluid, rerouted the vent line to the rear of the vehicle up by the gas cap door and installed a inline gas fliter. Smell has disappear. Sound crazy, but its gone thank god.

I will follow up on a repair answer when I get one. Stay tuned

My Chevy 2017 tahoe (25,000 miles) smelled of propane after driving a short distance , after months of searching. Its was coming from the differentials, believe it or not. So far the dealer at this time has no repair, but is researching it. (I was the one who finally found it), when I showed it the dealer.