If you're only blowing the fuse while the trailer is plugged in, the problem is in the trailer/wiring. This takes into account that the truck has a factory installed 7 way receptacle. If that's not the case, the problem can be in the incorrectly wired truck and the trailer is ok.
On the truck, looking into the 7 way receptacle should be as follows.
Top left=Tail Lights
Top right=12v steady source/charge line
Left middle=Left turn/brake
Right middle=Right turn/brake
Left bottom=ground
Right bottom=brake controller output
Center=reverse lights if your trailer is equipped.
Your trailer plug should mirror this.
This is the standard.
SOURCE: How do you change the
Axle Shaft Bearing & Seal
Removal & Installation
To Remove:
Use a slide hammer, bearing puller and adapter to remove the old axle bearing
To Install:
SOURCE: 2006 chevy trailer tail light fuse?
yes there is , under the hood in a fuse block on left side of engine compartment , will be a 10 amp trailer parking lamps fuse ( TRL PARK ),,, also on right side of dash will be a right trailer turn/stop fuse and a left trailer turn/stop fuse, just for your information . i don't know if it will be plainly identified , if not maybe your owners manual can help identify it . were rootin for ya .
J5
SOURCE: engine 1 fuse keeps blowing when you turn the key
Engine 1 fuse powers the computer and some sensors. I had this same problem on a 98 chevy van 3500 and found the wire going to one of the oxygen sensors had shorted out on the heat shield. Inspect the wires going to all of the oxygen sensors. On this van one of the oxygen sensors on the driverside the wire was laying on the heat shield which eventually rubbed through the wire and shorted it out blowing the fuse. Your short could be on a different sensor but check all of the oxygen sensors because the wire runs so close to the sharp heat shield.
SOURCE: 2004 chevy 1500 brake lights not working
check fuse under hood, batery terminals coroded wire at harness if everything fails run a hot wire to rear brake line with an interuptor.
check the swich under the foot brake.
vitally
SOURCE: 2000 chevy express 1500 van having starting issues
Start with fuel system. Listen for fuel pump humm at fuel tank No humm check wiring to pump for power. Then check for spark at plugs and wires. Remove wire from coil and hold near engine and see arch when you crank. No arch. Replace ignition Modular inside distributor cap or cap or rotor
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