Where is the low prot for the ac system for gmc jimmy

yes you can charge it yourself if the gas canisters are sold in your country ,sounds like its just low on gas so add 500grms and that will make it work ,follow instructions on the can but basicaly you start engine turn AC on full blow then connect can to low pressure port its the smaller of the two connections and let the engine draw the gas in ,do not put more than 500 grms in as overcharging the system will cause the engine to loose power and start surging in and out as you drive

should be a black cap you will know if it's the right one because the fiting will only go on the low port side.

flushing the radiator changing the thermostate and the heater core will not have any effect to the vehicle AC systems to make the AC systems blow cooler air. you need to have the systems check by the AC shop to check if you have any leaks, it may be low on refrigerant and may just need recharging. any ac shop can tell you exactly what wrong with it and what need to be done. You may have a small leak somewhere causing the ac unit to be low on refrigerant which they can put a die in the systems to detect any leaks you may have.

follow the ac lines. most likely on passangerside near the dryer(that round canister that drips water). Or it could be by the compressor.

Check the wires that go to your wheels for the ABS. They are probably bare from stones hitting them, and shorting out the system.

pop the hood and check to see if your ac pump is turning or just free spinning if it isn't spinning then u might have tripped the low ac pressure switch and may need to be checked for leaks and recharged

have the a/c recharged first to make sure the system is full if the compresser will not come on jump the wires on to low pressure switch located on the dryer if the a/c works after that replace rhat switch

You are low on freon, it needs to be topped up.

check to see if ac compressor is turning ,if so look to see if cooling fan/fans are working if not check fuses,and cooling fan relays/if ac is turning and cooling fan/fans are working ,need to put gauges on ac system and check pressures ,if normal ,and ac low side pipe/lines/hoses are cols then it is ur actuator motor for the temp door that is not working

this is caused by the AC system being low on refridgerdent charge from a front compressor seal leak most commonly