hi - I have a slow leak in the A/C and a standard can of 134a ($11) lasts about 2 weeks with a nice level of cooling for 80 degree weather. I have a 5.7L engine. There is a heat/cool control panel at the second row seats, but I am not sure if means it is a duel system.

What is the general direction for this? Leak stop and a UV light? My neighbor does not like the leak stop, saying it make a mess inside the system. Take it to the shop? 125k miles. Thanks.

 

Judging by your description yes you have a duel system, I cannot find the leak on my system, Tho it is much slower at losing the gas, as it takes almost a year for the system not to give ice cold air, I just recharge mine once a year, Without looking the Ally pipe On the top of the engine, sorry cant remember if this is the flow or return is at least £400 to replace, but you can get a hydrolic pipe man to make you come new hoses for next to nothing,(well less than a quarter of the price of OEM parts) and this is possible for any pipe work.