2005 GMC Sierra

2005 GMC SIERRA
70,000 MILES • V8 • 4WD • AUTOMATIC
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CHACKMAK
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  • 1 POST
I have an '05 GMC 2500HD with a LLY duramax. My question is related to a Catalytic Converter. Under the truck, in front of the muffler, there is an enlarged can that some have told me is a cat converter. Is this true? And if so, shouldn't there be a sensor attached to it? There are no plugs or wires coming off it. My truck is registered in California.
Dec 6, 2008 at 4:36 PM
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BRIAN 1
  • ✓ASE Certified Mechanic
  • 1,030 POSTS
  • ASE Certified Mechanic
yes it is a cat converter,this vehicle does have one. it does not have 02 sensors on the exhaust,diesel engines do not use them.
Dec 6, 2008 at 10:19 PM
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