I noticed a burnt oil smell after my holiday travels and then some oil on the floor of the garage. I haven't gotten underneath the truck yet, but from up top it looks like one of the oil cooler lines is leaking at the rigid to rubber transition in the line, right in front of the power steering pump. I'm wondering if there is another leak also or the same leak is getting oil down on the cross member and drivers Cat also, cause it seems to be all covered in oil down there.

Pretty disappointing since I only have 38k miles and part like a oil cooler line goes bad. Maybe I shouldn't expect so much out of a gmt900, the more I have it the more it seems like a poorly built model.

Any others with this experience?

 

Common issue really.

Trans cooler lines leak more often though. And mileage doesnt really matter half the time, it's the age that does it.

I always saw the 07-10's leak the most on the gmt-900 platform, either the newer ones got better lines or they just weren't aged enough yet.

 

Thanks for the info. Truck is 4 yrs 3 months old.
I see new lines are $55 on Amazon so I'll pick that up to replace.
Doesn't look to be too bad to replace them, per this post. I realize its for the gmt800s but I'm sure it still applies.

https://www.performancetrucks.net/fo...lassic-496027/

 

Make sure to get OEM replacement lines. I got the aftermarket replacement lines for my GMT800 and the fitment was awful. They didn't plug into the quick connectors well and the bends around the fan shroud were actually wrong.

 

Do I need to remove my front sway bar to replace the lines? I'm diving into it while changing the oil and I'm thinking I'll have to remove the front sway to get the front drive shaft out of the way. I have the z85 package, 4x4.

 

I didn't have to take off the front sway, I worked around it. I will say this job wasn't nearly as easy as I thought it would be. I'm still a beginner mechanic but those lines where a tight fit, I about gave up a few times.