Do not go here if you have an RV. we have taken ours there 4 times and it still hasn't been done. The first time my husband took it it did not pass smog, although it passed the ""visual"" inspection. When my husband was under neath it fixing somethig he noted that the catlitic converter was not even connected. He re-connect it and took it back for the ""free r-check"". they said it would be a couple of hours. he went back over well after 3 hours had passed and was told they didn't get to it, the tech didn't know how to do the RV, but bring it back again. It had been running the whole time and used up most of the gas.
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