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5.3l Engine Knock On Accel.

Ridgeback1

By Ridgeback1
November 13, 2010 in Gen III & Gen IV V8 Engines (LS-Based)

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Ridgeback1

Enthusiast

Ridgeback1

Posted November 13, 2010

Posted November 13, 2010

My 08' SLT Crew 5.3L 4x4 with 64K has been knocking while under full acceleration(?). I use major brand gas, mixing it up between 87 & 93 Octane. K&N air filter is only engine mods. - and it's clean. Anyone know what could be causing this..? Known problem with this (aluminum block) version of this engine?

Thanks!

cerbomark

Senior Enthusiast

cerbomark

Posted November 18, 2010

Posted November 18, 2010

If you are not the original owner maybe it had a PCM tune causing it...

1 month later...

Sly

Enthusiast

Sly

Posted December 29, 2010

Posted December 29, 2010

Does the service engine soon light flash while this happening?

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