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LMC Truck



Username Post: 2014 sierra ac/freon leaks        (Topic#343808)
george88gta 
"13th Year" Silver Supporting Member
Posts: 1831
george88gta
Loc: new york
Reg: 04-23-03
04-05-17 01:49 PM - Post#2685134    

Truck is a 2014 Sierra 1500. AC quit two weeks ago. Got it in to the dealer today and diagnosis was "freon very low". They topped it off ( free!) and checked for leaks. None found. They asked me to bring it back in two weeks or so and they will check freon charge. I read somewhere that these trucks have an issue with the aluminum/rubber lines leaking do to vibration and that GM came out with a bracket to support the lines. Anyone have any info on this? Is there a TSB that lists the part number for the bracket? Somewhat sounds like the issue that GM had with oil cooler lines leaking. Truck is my sons and he is in the Air Force, heading to Oklahoma for training and I would like to get this resolved before he goes.



 
LMC Trucks
george88gta 
"13th Year" Silver Supporting Member
Posts: 1831
george88gta
Loc: new york
Reg: 04-23-03
04-05-17 02:23 PM - Post#2685135    
    In response to george88gta

Found it! Look at this link http://sandyblogs.com/techlink/?p=3816
Part number for bracket is 23264893.



 
rockfangd 
"4th Year" Gold Supporting Member
Posts: 1974
rockfangd
Age: 31
Loc: Utica ny
Reg: 04-13-10
04-18-17 06:11 PM - Post#2687232    
    In response to george88gta

I bet that is the problem. Probably too much load at the weak point of the line causing it to flex and crack. could be right at the fitting
My Cadillac had a similar problem
Would totally pass a leak test but under pressure it would leak out from where the hose mates with the aluminum line.
Do not put or let anyone put stop leak in your system.
Should be warranty.
they had that issue with trans lines, oil lines, etc...

Old School GM fan FOREVER


Edited by rockfangd on 04-18-17 06:13 PM. Reason for edit: No reason given.

 
george88gta 
"13th Year" Silver Supporting Member
Posts: 1831
george88gta
Loc: new york
Reg: 04-23-03
04-19-17 05:14 AM - Post#2687290    
    In response to rockfangd

I have been using the AC for about two weeks and truck goes in to dealer for a recheck tonight. I will hand them the info. I will let you know what happens.



 
george88gta 
"13th Year" Silver Supporting Member
Posts: 1831
george88gta
Loc: new york
Reg: 04-23-03
04-21-17 08:23 AM - Post#2687589    
    In response to george88gta

I checked the temperature ( at the outlets ) and it was around 40 degrees. I knew their answer before bringing the truck in, "No problem, working fine." So we will drive it for a few more weeks and bring it in for a recheck. Hopefully we will get some warm weather to stress the system, it is 49 degrees here today.



 
rockfangd 
"4th Year" Gold Supporting Member
Posts: 1974
rockfangd
Age: 31
Loc: Utica ny
Reg: 04-13-10
04-21-17 07:00 PM - Post#2687681    
    In response to george88gta

yup. Sounds like NY.
Heat today,
Ac tomorrow

Old School GM fan FOREVER


 
LMC Trucks
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