z28burner

the passenger side cat on my 98 z28 has developed a very loud rattle, when i pound on the cat i can hear something inside the cat move around, has anyone experienced this problem and if so what was the remedy? looking at the system it appears that i am going to have to remove the entire system to cut out the old cat, if i do not replace the cat and just weld in a piece of tube, will i have any trouble codes

2002 SS #476

iTrader: (2)

The catalysts inside the converter is coming apart.

z28burner

any suggestions on what i should do??

2002 SS #476

iTrader: (2)

Replace it with a factory one if you don't want to worry about your check engine light coming on. If you gut it, your light will most likely come on with a catalyst efficiency code. Sounds like a good time for headers and a y-pipe.

stroked383z

iTrader: (1)

i got a letter from GM the other day saying that they would replace the LH and RH cats from the dealer for free if there was a problem with them. it was for 2002 5.7's only.

lsx24

iTrader: (45)

Cat needs to be replaced. Time for high flow cats or you can get a stock like replacement from a low mileage ls1 from a boneyard.

SScott236

I have an 01 and i got the same letter. I dont have cats though so i doesnt matter