*Oil Leak*

[Dirtbiker]

It has been a problem on all GM trucks for a long time. At least since 2003 when I bought my first new GM truck. Economics means they will never make better ones. Warranty to fix a few versus the cost to make millions of hoses better……

Every time it hits -35C here and I start my truck the cooler lines start sweating. 
Yet I keep buying more trucks ha ha. Necessary for my job. 

On my 2006 I got the dealer to give me the new warranty hoses and took them to a hydraulic shop to get them make into steel braided lines instead of rubber hoses. Then they installed them. Those ones never leaked again. 

[pennztrkr]

On 1/29/2021 at 3:45 PM, BIGDOGx said:

Oil filter 

On 2/9/2022 at 2:16 PM, finn5033 said:

I know this is an old thread, but my 3500 with the 6.6 gas engine is in getting the oil cooler line replaced because it was leaking. Haven't been able to find any info online about this being a problem on the HD's.                                                    

 

Mine was the same thing.

[NotoriousGT350]

Been a little over a year and it's still holding up. Had a few physicians and pharmacist at work with newer '19-up GM vehicles having problems with lifter failure. No transmission oil lines yet, and hope not.