Heater blower on 1990 Pontiac Bonneville

Heater blower only works on high. All other settings blower does not work. What are things I can check on. Mel

by in Burnsville, MN on April 27, 2011
2 answers
ANSWER by , April 27, 2011
blower motor resistor block should be by or on motor
ANSWER by , April 27, 2011
Cogcan is right and here's what it looks like https://partimages.genpt.com/largeimages/482402.jpg around $27 at Napa