Front Suspension raise lock solenoid circuit shorted or open circuit
Aux 4th Raise Coil solenoid shorted to 12 volts.
Front Suspension raise lock solenoid circuit shorted or open circuit
If Inadequate air flow is problematic, so clogged air filters, evaporator core air flow restricted, faulty blower fan motors, defective blower switch or faulty wiring or loose connections.