Alliance fixed my wipers by replacing a control box, but could not fix my cruise control. When you press the cruise control button the engine light comes on. The tech said I need to take it to a caterpillar service center. He said the SMART wheel checks out, but the connection to the engine is faulty and a CAT dealer has to fix it. I just got home due to a family emergency, and was wondering if there is a CAT service center near me in Maryland that would know how to fix this problem.