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TimfmCT's avatar
TimfmCT
Explorer
Aug 12, 2015

Catalytic converters for 2005 workhorse with GMC 8.1 vortec

Our 2005 Tiffin Allegro has the GMC 8.1 on the workhorse chassis. It's got 58,000 miles on it. We've had it for 6 years. Last year we replaced the transmission cooler assembly (rusted out) this year w...
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Hank_MI's avatar
Hank_MI
Explorer
Aug 14, 2015
Thread title says catalytic converter, then you say muffler. Many converters have a separate heat shield attached to them, they got really hot. Could the hanging metal be the heat shield?

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