I smell exhaust or something while driving. I took it to my mechanic no exhaust leaks as well as the exhaust guy in town. Exhaust manifolds are fine too. If you crawl under it while it's running you can smell exhaust from the cat back. No trouble codes. 92 GMC Sub 1/2 ton 5.7L V-8 2 wheel drive. 206,000. The exhaust out of the tailpipe will knock you over
Sep 27, 2007 at 1:58 PM