I have 1999 Chevy 2500 Suburban that the A/C wasn't working. They figured it out in less than a day. Grounded ECM. They order a remanufactured one...which obviously took some time to receive. They called to install it a and reprogram it. Unfortunately their programer wouldn't complete the task. They went the extra mile and took it to the Chevy dealer for them to do it. It came back ready to drive home. Willy's will get the job done no matter what.