BJAandSons Posted September 22, 2010 Report Share Posted September 22, 2010 i have a 1999 seville sts w/dual air.the pass.side works but the driver side doesn't cool. Link to comment Share on other sites More sharing options...
KHE Posted September 22, 2010 Report Share Posted September 22, 2010 The system is probably low on refrigerant but not low enough to trigger the low refrigerant message. Feel the evaporator inlet and outlet lines - are they very close to the same temperature? If so, the problem is a mixer door actuator. If the outlet is warmer than the inlet side pipe, the system is low on refrigerant. If you had a set of A/C gages, the high and low pressure readings would point to the problem. Kevin '93 Fleetwood Brougham '05 Deville '04 Deville 2013 Silverado Z71 Link to comment Share on other sites More sharing options...
nzane Posted August 30, 2011 Report Share Posted August 30, 2011 the actuators are worn. on 99's the plastic (cheap) wears down based on end-of-life engineering manufacturing initiatives via GM execs. Get Dorman products from rockauto or elsewhere about $115 passenger & $100 drivers side. Forums all around can assist in "how-to's". The dealer will charge you well over $1500 to fix this, shops will charge a little over half that. The freeon may assist but it would be a false positive effect. The work is not overly difficult, but your savings will be worth the effort. Link to comment Share on other sites More sharing options...
cdgrinci Posted August 30, 2011 Report Share Posted August 30, 2011 As Kevin mentioned post #2, rule out the refrigerant first. It sounds weird that low refrig would cause this (but it sure can). Chuck '19 CT6, '04 Bravada........but still lusting for that '69 Z-28 Link to comment Share on other sites More sharing options...
Texas Jim Posted August 30, 2011 Report Share Posted August 30, 2011 Like Kevin said in post 2... Classic symptom of low freon... Link to comment Share on other sites More sharing options...
Ranger Posted August 31, 2011 Report Share Posted August 31, 2011 I'll 3rd post #2. Link to comment Share on other sites More sharing options...
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