what is a computer recalibration? heater elbow?

Hello, i would defintiely ask for further explanation from the service manager of the shop you utilized. It's impossible to know from here what happened and what was actually performed. It also sounds like the shop needs to address the poor restart and air conditioning concern. A computer recalibration seems like a software update for one of the many modules in the vehicle. From your information, I cannot determine which module was recalibrated. The air conditioning concern could be caused by multiple comopnent issues. The heater elbow sounds like a small heater hose that carries coolant was repaired. Was an air pocket introduced into the system, causing a loss of air condintionig perhaps? Too hard to say; see a local shop near you for more help! https://repairpal.com/auto-repair-near-me Click the link or call us at 877-913-1554. We'll gladly find you a certified RepairPal shop in your area.