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There have been a few reports of the high pressure mechanical pump leaking.
 

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Discussion Starter · #4 ·
Could be a gasket leak right before the catalytic converter, definitely have the dealer check it out.
It us underhood,front driver side
There have been a few reports of the high pressure mechanical pump leaking.
of engine
There have been a few reports of the high pressure mechanical pump leaking.
I think that might be it.can't see the actual leak,but see it on air intake tube.started engine and watched,white smoke when it hits engine,Scary shit.Have to get it to dealer.Will get you an update after it is fixed
 

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It us underhood,front driver side


of engine

I think that might be it.can't the actual leak,but see it on air intake tube.started engine and watched,white smoke when it hits engine,Scary shit.Have to get it to dealer.Will get you an update after it is fixed
Be safe, the Trailblazer DI fuel pump operates at 5076 psi, very dangerous if it's spraying out. Let us know what they find.
 
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Discussion Starter · #7 ·
Have my 2021 Trailblazer at dealer for gas smell repairs.Had to wait until after Holidays.Right now waiting for parts to arrive. Looks like I am not the only one with this problem with the 2021 1.3L. Gm service bulletin PIP5765 covers a leak in fuelrail. Will update on actual parts replaced when done.

 

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5000 psi is more than enough pressure to find a leak somewhere. Let us know what part they replace so we can all keep an eye on it.
 
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Thanks for the update!
 
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