Originally Posted by gig229
I had this very same issue on my 09 Enclave. If you ever have to top off refrigerant, you got a leak! Mine landed up being the front evaporator; but in fact both evaporators landed up leaking along with other stuff that went wrong. Leaky evaporators is a common problem with the AC system - cheap parts! Don't let the dealer tech tell you they cannot find the leak; if they look in the right places with the right tools they should find it.
In my opinion, if you have had other issues, such as the pump, over heating, etc... then it leads to the AC.. why? because they have to fix these items which in fact affects the AC issues... I purchased a 2010 LT Traverse with (supposedly a 172 pt inspection) in March 2014,
When I brought mine back because I wanted to use the AC in April of 2014 in MN:
I preesed the AC button... it flashed, wouldn't engage...
CAUSE: SEAL LEAK AT CONDENSER HIGH PRESSURE
4414350 AIR CONDITIONING O RING SEAL REPLACEMENT
173 W 1.00
2 12356150 REFRIGERANT
1 52477087 (S) SEAL
1 52474373 (S) SEAL
71944 SEAL LEAK AT THE CONDENSER HIGH PRESSURE REPLACED SEALS AT CONDENSER, REFILL & RECHECK OK. VENT TEMP 40
3 months later...
FOUND THE SYSTEM HAD ONLY .1 POUNDS OF REFRIGERANT. PUT DYE IN SYSTEM AND FOUND THE CONNECTION BETWEEN THE CONDENSOR AND HOSE CONNECTING THE
4416040 AIR CONDITIONIND CONDENSER REPLACEMENT
467 W 3.00
1 12356150 REFRIGERANT
1 22918340 W-(S) CONDENSER
1 22757062 (S) HOSE
FOUND THE SYSTEM
HAD ONLY .1 POUNDS OF REFRIGERANT. PUT DY IN SYSTEM AND FOUND THE CONNECTION BETWEEN THE CONDENSOR AND THE HOSE CONNECTING THEM WAS LEAKING. 4416040 3.00 REPLACED CONDENSER AND HOSE TO CONDENSER FROM COMPRESSOR. RECHARGED A/C SYSTEM. ALL WORKING AS DESIGNED. SYSTEM WILL NOT TURN ON WHEN BELOW 40 DEGREES IS READ ON OUTSIDE TEMP GAUGE. 1.0 FOR REPLACING LEAKING HOSE.
Well, in January 16, 2014 according to RO 801355 Customer states having to add coolant water pump replacement...
Story: 66632 Pressure tested cooling system and held pressure for over 45 min. Inspected for leaks and traces of dye, and water pump shaft seal leaking. Pressure test cooling system found water pump shaft seal leaking. Replace water pump and refill coolant.
Can someone tell me... is this related?