Medium and Heavy Trucks
Have Truck Repair Questions? Ask an Expert
do you have any lights on in the dash ?
yes thats a big one
make sure that they are all going up and down properly,and none are going off the wall,does the truck lose power intermittenetly?
is the park brake light on all the time ??
which light ??
he are the following items that can cause that buzzer to come on
oil pressure low
coolant temp high
make sure the above is right
does the park light work ??
Hi Its Dan. I see there were multiple questions open on this. I posted on your first question earlier today. click on this link for the air manifold switch diagram and check the switches and for damaged or disconnected wiring causing a short or open circuit. Let me know