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Ask Gm Tech (Cam) Your Own Question
Gm Tech (Cam)
Gm Tech (Cam), GMC Mechanic
Category: GMC
Satisfied Customers: 1685
Experience:  GM Grand Master Technician 2007. 14 year experience.
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A/C losing freon have but leak detector in it a cant see and

Customer Question

A/C losing freon have but leak detector in it a cant see and red dye on system
JA: Coolant leaks can be frustrating and tough to diagnose. How many miles are on the car?
Customer: 128,000
JA: Tell me a bit more about what's going on so he can help you best.
Customer: 2003 envoy slt heater control value went out had to move dryer and that been 2week and stop getting cold 1 day a go
JA: Are you hoping to fix this yourself?
Customer: Just place dye in unit to detect a leak and yes I am trouble shooting it
JA: Is there anything else important you think the GM Mechanic should know about your GM?
Customer: That's it
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the GM Mechanic about your situation and then connect you two.
Submitted: 1 year ago.
Category: GMC
Expert:  Eric replied 1 year ago.


How many days have you had the dye in the system?

Are you using a blacklight to look for the leak?

Does your envoy have rear AC and if so, have you traced the lines to it yet to try to find the leak?

Have you removed the blower motor to look for dye inside the housing or inspected the ac condensation for dye in it?