AC Line - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 General Tech Q&A > General

General If it doesn't fit in any other forum

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  #1  
Old 05-25-2019, 02:59 PM
tcaudill tcaudill is offline
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AC Line

I have a 06 envoy with a pin hole leak in the small ac line right under passenger door on top of the frame. Tried Quick Steel by recommendation of AutoZone and that didn't work. Curious if anyone have repaired AC lines and how they did it. Was trying not to have to replace the entire line. My next attempt at repairing was going to be cutting out the bad spot and splicing in a new line with the self crimping high pressure fittings. I've used them before when repairing bad spots in break lines and had pretty good luck. Any advice would be appreciated.

Travis
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Old 05-25-2019, 10:50 PM
Relfan Relfan is offline
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2006 GMC Envoy SLT
Silver 4.2L I6 AWD
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Hose repair

If your fitting doesn't work you can find the exact diameter hose that will slip over the line and put about three clamps on both sides of the splice. You'll need to find the hose at an ac repair shop or a speciality hose shop. There really isn't that much pressure on it. If the line is steel you can braze it but that is a specialized skill and you need good access to the line. Sadly, none of the methods will work as good as replacing the whole thing. Good luck
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Old 05-29-2019, 08:17 PM
SteveJL SteveJL is offline
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2007 Chevy trailblazer
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I did what Relfan suggested on a pinhole leak in the transmission cooling line, which seemed to hold up fine, much easier than replacing the whole line.-I coated the inside of the hose with some sort of sealant also.
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Old 05-29-2019, 11:22 PM
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EnvoyBoy2004 EnvoyBoy2004 is offline
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Relfan- the high side line can run 150 PSI and a rubber hose may not work in a freon environment.
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Old 05-30-2019, 07:26 AM
suzieq suzieq is offline
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Take it to an AC shop, they will have the knowhow, and equipment to fix it right. Don't know if it can be repaired after you tried a quick fix, may have to replace the line.
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Old 05-30-2019, 03:44 PM
mddombrowski mddombrowski is offline
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You will need to replace the line. You risk contaminating the system with moisture and/or debris which will cost a lot more to repair.
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