So ya know, a guy at work told me about a place down on Mississipi in Denver called Cartech Inc. Was quick in and out. Guy did not look under hood or underneath truck or anything. I drove it on to the machine. He put some device on the tailpipe, came back around and did the test sitting in the drivers seat. Took all of about 5 minutes. The cost was $45. 00 as I had a coupon the guy from work had gave me for $10. 00 off.
Mike L.