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  1. K

    2001 Chevrolet Tahoe 5.3 Engine knock - help to identify

    Been dreaming of putting a 6.0 in it, is it possible to flash the ecu to a 6.0 map? Without messing up the transmission, since i believe the ecu controls it all From what i know, the 6.0 was mated to the 4l80, not 4l60e that is in mine. I also dont want to blow that trans up There is not alot...
  2. K

    2001 Chevrolet Tahoe 5.3 Engine knock - help to identify

    Yeah, i bet this engine is toast, with the low compression + knock, i dont see it smart to rebuild with the machining needed. With a new block, i will also replace the injectors since it is likely thats the culprit, coolant level is and always have been stable. Hopefully the heads can be reused
  3. K

    2001 Chevrolet Tahoe 5.3 Engine knock - help to identify

    It has not been overheated as far as i know, but i am 6th owner of this one, so i cannot speak for what has happened earlier For me, the noise at startup was like a kickback in 450cc dirtbike. I suspect an leaky injector to be the culprit to that, but it seems odd to me the knock develops after...
  4. K

    2001 Chevrolet Tahoe 5.3 Engine knock - help to identify

    it is on my todo list, so far i have done a compression test with all plugs out, and one in the suspected area is reading lower. / 131 psi / 9 bar the rest were reading 174 psi / 12 bars with camera there is also signs of some scratches on cylinder wall, that can explain the lower compression...
  5. K

    2001 Chevrolet Tahoe 5.3 Engine knock - help to identify

    Hi i have an 01 Tahoe 5.3 that got a heavy knocking sound after sitting for approx 14 days. What happened is a failed start attempt at first, it turned over and instead of starting it just made some noise and did not start, restarted it and then there was a new knocking sound. I suspected...

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