Bought my 17 year old son his first vehicle a 98 jimmy gmc. At first AC worked good but went out in May. Hot air poured through vents when driving and then suddenly cool air would briefly begin. We ordered the blend door accuator and installed it replacing old one behind glove box. Started the vehicle up and now nothing works. Turn knob for fan and temp and nothing. Not sure what is happening now. Not sure what to try next. Any suggestions?
