Service Engine on Puts out 2 Codes
I took my blazer in to have the push button
4x4 checked.They replaced Differential
Actuator and replaced some vacuum lines 1
to the intake.Saying something about heater
a heated oxygen sensor and about a
switch.Don't make sense no service light
was on before nor was the wipers acting up
etc and said a wire short circuit.Truck has
been kinda missing before going down road
but it don't make sense.I am lost