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GM 3.6 VVT

Rockabillyrat

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Just a heads up, I checked for engine TSBs this morning on this engine to see if there are any updated parts that you need for the rebuild. GM issued TSB PIP5216G for rod bearing failure. They have you inspecting the heads and VVT solenoids. If metal shavings are found they are recommending REPLACING the engine and NOT rebuilding it.

Here is a link to the TSB so you can make your own judgment on if you should follow through on this rebuild or not.

https://static.nhtsa.gov/odi/tsbs/2019/MC-10169341-9999.pdf
 

Will L.

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I wonder if it is time/ labor costs that push it because of disassembly of the units for cleaning and possibly replacement costs bring it close.

I can’t imagine new engine being less cost than replacing half the components.

100% tear down and inspection- then replacing any damage components like the vvt solenoids if in doubt for them.
 

Rockabillyrat

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The TSB talks about the oil filter being in bypass mode causing metal shaving to be sent throughout the entire oiling system. The heads don't use cam bearings so if there is damage the heads will require replacement. Its probably better for GM to replace the engine to avoid any costly comebacks. its all about the bottom dollar.
 

Rockabillyrat

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Yes, but check the heads for wear at the cam journals. There is no bearing so if they are damaged the heads will need replaced. I just don't want to see you rebuild this engine just to have a vvt issue and have to pull it back out
 

Rockabillyrat

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Let us know what you find.

I did not know GM had a TSB for the rod bearings on the 3.6. I figured that was information you needed to see. Hopefully yours didn't send metal into the top end and the heads are still good🤞
 

WarWagon

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I wonder what oil filter is on this engine? One of those tiny ones GM likes to shove on everything? The old oil filter may be worth an inspection in case IT caused the engine failure.
 
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