Jump to content

Catalytic Convertors

Victor Brown

By Victor Brown
in Engines & Drivetrain

 Share

Recommended Posts

Victor Brown Enthusiast

Victor Brown

Posted
  • Author
Posted

Because I want to take the one off my 02 Silverado 4.8 Ls and put it on my 2017 Silverado 1500 LT 5.3 that's y I'm curious

CamGTP Senior Enthusiast

CamGTP

Posted
Posted

Not really.

 

The y-pipe will not bolt up at all.

 

Technically the only thing you could do is chop the cat off that pipe and the exhaust on the 2017 truck, then weld the cat back into place. But it's still possible that the 2002 cat converter does not do enough for the much newer emissions requirements on the 2017 truck. So the check engine light could come back on.

movario Enthusiast

movario

Posted
Posted

Is it molten or loose? Or do you have fault codes?

 

The cat should normally last until the car is gone or the converter is stolen 😀

  • Thanks 1
Victor Brown Enthusiast

Victor Brown

Posted
  • Author
Posted

Check engine light blinks and when the tranny downshifts the exhaust vibrates really bad only when dropping into a lower gear it was giving me a code of engine misfire on 3 and 5 so I replaced all ignition coils on negative side all new spark plugs driver and passenger cleaned my throttle body and reset it but I haven't tried changing my 02 sensors just need some different opinions on what it might be causing my check engine to blink that's usually something serious

newdude Senior Enthusiast

newdude

Posted
Posted
23 minutes ago, Victor Brown said:

Check engine light blinks and when the tranny downshifts the exhaust vibrates really bad only when dropping into a lower gear it was giving me a code of engine misfire on 3 and 5 so I replaced all ignition coils on negative side all new spark plugs driver and passenger cleaned my throttle body and reset it but I haven't tried changing my 02 sensors just need some different opinions on what it might be causing my check engine to blink that's usually something serious

 

 

What are the codes in the truck?  Not a description, but the code number.  So say its P0303.  

 

A cat y pipe would not be compatible from a 2002 to a 2017.  Different emissions requirements, different exhaust layout.  

movario Enthusiast

movario

Posted
Posted
13 hours ago, Victor Brown said:

Check engine light blinks and when the tranny downshifts the exhaust vibrates really bad only when dropping into a lower gear it was giving me a code of engine misfire on 3 and 5 so I replaced all ignition coils on negative side all new spark plugs driver and passenger cleaned my throttle body and reset it but I haven't tried changing my 02 sensors just need some different opinions on what it might be causing my check engine to blink that's usually something serious

 

That does not sound like a catalysator issue. I think you should start with a systematic fault analysis instead of just changing parts. Otherwise you probably end up wasting a lot of money.

 

As @newdude said, what are the fault codes?

Victor Brown Enthusiast

Victor Brown

Posted
  • Author
Posted

I have no choice I had a full scan done and the only thing that came up was a engine misfire on cylinders 3 and 5 and I was told to change the ignition coils and wires so that's what I did but the engine light keeps coming on and blinking from my experience that indicates a bad cat maybe I should perform a smoke test to see if there is a vacume leak somewhere just hoping someone out there might of encountered something similar

 

 

 

movario Enthusiast

movario

Posted
Posted

A blinking Check Engine Light indicates only misfires. Nothing todo with the catalytic converter.

There are a lot of reasons for misfires. Bad plugs, bad ignition coils, low fuel pressure, bad injectors, broken valves, lifters, compression issues and so on.

I really think you should perform a step by step fault analysis.

Victor Brown Enthusiast

Victor Brown

Posted
  • Author
Posted

I thought this was a place we bounce ideas off of each other y am I being questioned like I don't know what I'm talking about instead of telling me where you think I'm wrong which I'm not try helping me out it has everything to do with the cat for example what steps would you take if you had a deep scan of your vehicle done and you came up with one code so you think you have the problem pinpointed well after repairing all areas that have to do with that code your problem still exists what would you all do that's all I'm here for advice not who's wrong or who's right

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.5k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,973
    Total Members
    8,960
    Most Online
    RichardRS
    Newest Member
    RichardRS
    Joined

  • Who's Online   0 Members, 0 Anonymous, 805 Guests (See full list)

    • There are no registered users currently online

  • Latest Articles

  • Posts

    • Grumpy Bear
      The Peckish Synapse

      By Grumpy Bear · Posted

      Well that book won't sell many copies. Taking ones right foot off the loud pedal never gets applause. Funny really, It isn't that people don't know what to do...they just don't want to do it. But they will complain about it. About bad craftsmanship, about the cost of fuel, about the cost of part and repairs and mainly they complain that the solution while still possible isn't one they are willing to do.    I observe this daily. 'Gas cost to much!", they wail, while they mat it passing at 80+ mpg and scoot down the road like gas cost a dime a gallon. Then complain about the few that will lift and save both fuel and iron like they are owed and own the road.    Good thing they haven't an ounce of influence on my equipment. The rest I just laugh at. Stupid is as stupid does, right Forest?     
    • Grumpy Bear
      Gas Prices

      By Grumpy Bear · Posted

      Today I filled up with 4.899 gallons of fuel at a cost of $4.899 a gallon. $24 bucks. 290 miles. 59.2 mpg. After my 4% COSTCO discount just under eight cents a mile.  
    • SwitchBladeSierra
      14-18 Sierra 1500 Heated Steering Wheel Help

      By SwitchBladeSierra · Posted

      Howdy folks,   Recently I pulled a heated steering wheel and clock spring out of a 2015 Sierra All Terrain (part numbers coming soon - will have to disassemble), and just installed it on my 2016 Sierra WT (as base model as it gets).   On install, I noticed that I’m missing the connector often tucked behind the dash for the heating element.     No problem… or so I thought.   I used an “Add-A-Fuse” at my heated steering wheel fuse location, which has voltage, but no wires. I ran it to the positive of the heated steering wheel (Violet/White), and took black to ground.   Hooked up the battery, turned the truck on - no heated steering wheel. No button backlights. Was pleased to see that my cruise control was working though.   Read a post suggesting reversing polarity, so I gave it a shot. Violet and White to ground, Black to power.    Aha! Heat! But I seemingly can’t turn it off AND still no backlights on any of the buttons.    Checked all fuses, everything is still in good order. I’m stumped.   Does anyone have any insight? If so, please share!
    • TrueBlue
      Brake Pad Warning Message

      By TrueBlue · Posted

      I'm about 1800 miles into my last oil change, and yesterday a message appeared saying oil life was at 77%. Not sure why it popped up but I think all of these electronics could be susceptible to solar flares or somesuch. I change my oil right at 3K each time, and that was the first time in 10870 miles that message came up. Strange thing is that it showed on the screen at all since I don't drive with that sort of info displayed on the DIC.
    • SwitchBladeSierra
      Heated steering wheel

      By SwitchBladeSierra · Posted

      I’m praying that someone sees this and can help me out… pulled a heated steering wheel and clock spring out of a 2015 Sierra All Terrain, and just installed it on my 2016 Sierra WT (as base model as it gets).   On install, I noticed that I’m missing the connector often tucked behind the dash.     No problem… or so I thought.   I used an “Add-A-Fuse” at my heated steering wheel fuse location, which has voltage, but no wires. I ran it to the positive of the heated steering wheel (Violet/White), and took black to ground.   Hooked up the battery, turned the truck on - no heated steering wheel. No button backlights. Was pleased to see that my cruise control was working though.   Read a post suggesting reversing polarity, so I gave it a shot. Violet and White to ground, Black to power.    Aha! Heat! But can’t turn it off AND still no backlights.   Checked all fuses, everything is still in good order. I’m stumped.   Does anyone have any insight? If so, please share!  

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...