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I just replaced the cats on my 2000 chevy tahoe 5.3 liter

Customer Question
Hello i just replaced the...
Hello i just replaced the cats on my 2000 chevy tahoe 5.3 liter truck and the light is still on and throwing the 420 430 codes. I used universal catalytic converters not direct fit
JA: Just to clarify, what are the exact lights you're talking about?
Customer: Check engine
JA: Are you fixing your Tahoe yourself? What have you tried so far?
Customer: No i took it to a mechanic. He had me change the 02 sensor after the cats and its still on
JA: Anything else you want the mechanic to know before I connect you?
Customer: Yes.... I was told to check the temperature before and after the cats so i did before the cat it was 300 and after was 344. This is after driving the vehicle for over an hour
Submitted: 2 months ago.Category: Chevy
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Answered in 52 minutes by:
9/9/2017
Chevy Mechanic: david craig, Auto Mechanic replied 2 months ago
david craig
david craig, Auto Mechanic
Category: Chevy
Satisfied Customers: 4,023
Experience: owner/mechanic at 3D Automotive
Verified

Hi Im David, thanks for visiting the site. Did your mechanic erase the codes after you installed these parts?

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Chevy Mechanic: david craig, Auto Mechanic replied 2 months ago

do you still need assistance?

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