Our Community is 940,000 Strong. Join Us.


Horn, wiper and interior lifgts issue


laxman21
10-26-2007, 12:57 PM
The horn work on and off. When it's not working I have to wiggle the relay to get it working again.

Sometimes the wipers don't work and I have to restart the truck to get them to work, and they quite on my wife the other day in a storm.

The interior lights will not turn off when you close the door or when you hit the override button with the key off. Pulling the fuse did nothing either.
You have to put the ignition in the on position and hit the dome override for them to be off when you close the door.


Could then problem be in the under hood fuse panel?

Any thoughts?

emt1134
10-26-2007, 07:56 PM
1. Could be horn relay on the fritz, or poor connection at terminals.

2. The circuit board in the wiper module may be going... very common problem on these trucks. Take the cover off, and look for signs of corrosion, water.. You can replace this easily.. if you do, make sure to put a bead of silicone aorund the cover before re-installation.

3. You may have a faulty door pin switch at either one of the four doors

laxman21
10-30-2007, 06:16 PM
1. Could be horn relay on the fritz, or poor connection at terminals.

2. The circuit board in the wiper module may be going... very common problem on these trucks. Take the cover off, and look for signs of corrosion, water.. You can replace this easily.. if you do, make sure to put a bead of silicone aorund the cover before re-installation.

3. You may have a faulty door pin switch at either one of the four doors


Repleace the horn relay, had the same problem so I used some dielectric grease on the contacts and have been OK since.


Where is the wiper mod?

How to diagnose the door problem..

Add your comment to this topic!