5.3 liter engine

Discussion in 'GM Powertrain' started by Jim Beard, May 26, 2010.

  1. Jim Beard

    Jim Beard New Member

    I am going to look at a 2004 Suburban this weekend with a 5.3 liter engine. I am more familiar with the old 305's and 350's. Can anyone give me some tips on what to look for or check?
  2. silveradotrailblazer

    silveradotrailblazer Epic Member 5+ Years ROTM Winner 5000 Posts

    The 5.3 is a great, reliable engine. Back in 2002 JD Powers said it achieved a rating of 9 per 100 engines. The Toyota 4.7 had a 13 of 100 and Ford 5.4 had a rating of 17 of 100. Most major problems I've seen with the engine is mainly owner neglect or abuse. I forgot to mention the rating is how many problems engines out of 100 had trouble.

    99'HEARTBEAT MODERATOR Staff Member 5+ Years ROTM Winner 1000 Posts Platinum Contributor

    I agree 100% with what Silveradotrailblazer has said about the 5.3's Being a Great Engine.......the 5.3 in my truck has 142,000 miles and it runs Great.
  4. bigdaddy77084

    bigdaddy77084 Epic Member 5+ Years 500 Posts

    Someone had a Youtube on here about the exhaust manifold bolts
    breaking off...Dont really know that much about the newer stuff..
    But ya learn alot on here thats for sure..
  5. Farmerdave

    Farmerdave Rockstar 100 Posts

    That was a problem with the 6.0s not the 5.3
  6. Silverado Junkie

    Silverado Junkie Rockstar 4 Years 500 Posts

    Dads 5.3l ran strong untill it blew a head gasket at over 255,000 miles. Awesome motor.
  7. bowfishrp

    bowfishrp New Member

    Got one in my 2002 Yukon and still running great at 114K miles. I did have an injector go bad but with the way the packs are separated to each cylinder it was easy to diag. It was also a good time to replace the plugs and wires. It also didnt leave me on the side of the road...just a trouble code.

    The one thing that I have to do every 6 months or so is clean all the black crud out of the intake. I pull the air cleaner and take choke cleaner and a clean toothbursh and open the intake gate and wipe down everything the toothbrush touches. Then fire it up and let it run for another minute and all it well. If I dont do this it starts idling too low and gets rough at idle. Never a problem other than idle.
    Last edited: May 27, 2010
  8. dsfloyd

    dsfloyd Epic Member 5+ Years ROTM Winner 1000 Posts

    never had any issues when I had my 2000 1500. Ran great
  9. bigdaddy77084

    bigdaddy77084 Epic Member 5+ Years 500 Posts

  10. Farmerdave

    Farmerdave Rockstar 100 Posts

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