when driving car cuts off
Start off with when driving over potholes and railroad tracks car would shut off
now when just backing up car will shut off but will start back up
Check the battery connections and the connections at the starter. They must be clean, free of corrosion and tight.
Search Buick Rendezvous Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Buick Rendezvous Experts