2007 Escalade ESV AC snowflake blinks.

AC BLOWS WARM AIR. (Front and back)

Was finally able to get snowflake to light. But it only blinks 3 times and goes off.

I just got a MAXICOM 808BT.
What reading values should I be looking for to determine if it’s the ambient air temp sensor like most users guess is the issue?

I’m aware of other issues it may be and hoping I could read the MAXICOM data to narrow down the issue. I’m looking for help deciphering Maxicom Readings

Check the A/C pressure sensor reading in the PCM. If it's near zero, that'd be why the light flashes. :lol: Find out where the refrigerant went.

You can also check the A/C Disable history in the PCM. Should store the last eight reasons it disabled the A/C.

Awesome! Thx so much!

I Found & attached a TSB on this issue.

Very helpful thx !!

AC disable history. RPM unstable.

Was able to get snowflake to come on after pulling a vacuum and adding refrigerant. Had to jump relay to get compressor to engage. Compressor clicks on and off quickly with relay installed. High pressure not holding. AC not cold. Ambient air temp sensor shows accurate in sacanner.

No, I did not add any dye. I’m guessing that’s my next step.