my 207 Lucerne overheats. Replaced thermostat, cooling fans, water pump on 2007 Buick Lucerne

engine still overheats. The A/C stopped working too. Runs OK on the interstate roads but overheats in traffic

by in Wakefield, MA on August 07, 2014
1 answer
ANSWER by , January 18, 2015
I had the same issue and it was a plastic fin underneath that deflects the air upwards toward the radiator