‘Reduced power’ light is on

Dear Doctor: I have a 2003 GMC Yukon with the 5.3-liter engine and 245,000 miles on it. While driving, there’s an error light indicating “reduced engine power.” When this happens I have no acceleration and must pull over and shut the engine off. After waiting a few minutes, I restart the engine and the error light is off, so I’m able to drive again. My mechanic says code P1516 is coming up, but he says it could be a number of things and can’t figure out what part to change. I welcome your advice.

— Mike

Dear Mike: A very common problem with many GM vehicles is a fault in the electronic throttle body. Reasons for this range from a bad connector to a bad TPS sensor in the throttle body (which can be replaced for about $100). In most cases you do not need to replace the entire throttle body. Have your technician check both Alldata and Identifix for the needed support information.

Dear Doctor: I own a 2016 Ford Fusion Hybrid. Later this year I plan to retire and spend my winters in Florida and my summers in New York. What can I do to store my hybrid car in New York? It will probably not be used for two to four months at a time. I’m concerned that the hybrid battery will die.

— Edie

Dear Edie: I would not worry about the hybrid battery at all. My concern would be the regular car battery. I recommend you find someone who will charge the battery periodically.

Junior Damato is an ASE-certified Master Technician. E-mail questions for publication to info@motormatters.biz. Mail questions to: Motor Matters, P.O. Box 3305, Wilmington, DE 19804.