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6.6 duramax coolant/antifreeze leak at rear of engine (parts links in description⬇️) grub 'n gas 7.85k subscribers subscribe I smell coolant sometimes but i am not sure if it is residual smell from these other two leaks. If thats the case, the one on the passenger side under the egr cooler thats a 90* turn is probably about to go and the one just behind the fan pulley on the top of it is about to go

Welded flange leaking on the exhaust gas recirculation (egr) coolant return pipe I replaced the water pump last winter because it was leaking, had the turbo coolant hose leak and replaced this fall Refer to call out #1 in the above picture.

I expect the coolant was only leaking when the system was under pressure, and once turned off and the pressure dropped, the leak stopped

The egr unit was ordered and replaced today I apologize, no pictures to supplement this post, but i thought it might help someone in the future if they experience a troublesome slow coolant leak. I have the dreaded 3.0 coolant smell from the passenger side of the truck The other day i pressurized the cooling system to see if i could find the leak

There are a couple of places that coolant leaks are known One is the water pump itself and the other is the actual radiator itself Check this video out, the mechanic works for a dealership so he sees different issues along the way 2023 sierra denali lz0 3.0 standard bed in pacific blue

Replaced 2018 chev colorado 2.8l lwn diesel long bed.

So today i was driving my truck and smelled coolant Got home checked it out looks like it's coming from the passenger side rear of the motor Saw a lot of burnt on coolant in the exhaust Took off the inner fender and seems like it's something around the up pipe and down pipe

I keep losing coolant slowly over about 300 miles my low coolant dic lights up

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