Here are all your fuses and relays. There is only a relay for the trailer lights. In modern vehicles the turn signals are a function of the body control module.
Check under the hood, in the fusebox, for a fuse label ctsy (courtesy). It'll be over the driver side wheel. Replace it, if blows and, you have a wire touching bear metal somewhere. Good luck!
The brake warning light should not affect the truck not starting...most of the time is because of low brake fluid or the emergency brake is on. To check for codes you should just turn the key to the on position and you need to try resetting you anti theft light.
It sounds like a short you can test by removing the NEG. cable from the BAT. put a volt meter from the POS. red lead on post of BAT. and black lead to engine block or known good ground if you read voltage you have a short .
Your tow and hall switch sounds like the place to start look at the fuse box although a blown fuse would cut power off to it but look anyway.
Next check all of your lights brakes blinkers running reverse tow and hall means you have a plug to hook up to trailer lights some ware . It could also be a brake switch at the brake pedal. You need to think its likely some thing vary simple a bad connection at a bulb or lose ground wire but its in the lighting system .This could have shorted the tow switch out see if you can reach up under the dash and unplug the tow switch but check all these other things first think about the problem before you do things you can't prove
I know this sounds nuts but I just did this to my Granddaughters truck and it works. Turn the key off open the door for 90 seconds close the door turn the key on but do not start the truck, press the gas pedal to the floor three times and shut the key off and wait 10 or 15 seconds and start the truck. This will reset the idle air control and should let the truck idle ok.
View wiring diagrams an using a DVOM - digital volt ohm meter is the normal way to find this type problem's. If unsure on how to proceed watch these video's Electric Testing Techniques You Need to KnowBasic Electricity for Service Techs Ohm law Current Flow Opens Shorts
Free wiring diagrams here http://www.bbbind.com/free_tsb.html
Enter vehicle info. year , make , model an engine size . Then under system click on lighting ,then under subsystem click turn signals .Click the search button then the blue link .Looking at the wiring diagram i see the BCM - body control module make's the turn lamps in the rear work .
c1500 (forgot the "C")/? 3 engine + diesel, not old engine,
try new distrib ? or fully rebuilt
not told exact part bad.
ICM, sure.
most folks that replace parts inside any distrib, (electronics only()
do so wrong.
it must have the heat sink thermal compound used, (thin)
or it over heats,, rebuilts are best for sure maker CARDONE 1.
the ICM has metal side, that must be thermal pasted.
must.
is use dow 340 compound or better.
dow makes some that is 8x better for the fasted processor made by intel. that run super fast and super hot.
so when I do care parts I use this, DOW TIM> TC-5022
340 up 5022 is nothing less than fantastic. use only thin covering
thin is best, even .002" thick film even use old credit car to do that.
Hi Eric, I don't know but it could be the computer most of the times is down the left side with the steering wheel on the right (here) with the fuse box near the steering. All the best with it. Greg.
Just to be sure... (since i just did this today). Steering wheel CC would turn on, but didn't actually work and nothing on the dash indicated. I replaced the brake switch like all sites tell us to do first. Ran the truck over 25mph and hit the CC button. Nothing on the dash, darn... but... when i hit the set button CC worked and dash indicator came on. Moral to this story is the dash light does not illuminate until the Set button is engaged! Maybe a duh moment, but i was disappointed there for a minute.
Stop lamp circuit discription
Stop Lamps
The STOP LP 25-amp fuse in the underhood fuse block supplies battery positive voltage to the normally open stop lamp switch. When the driver presses the brake pedal, the switch contacts close and battery positive voltage is supplied to both the STOP 15-amp fuse and the center high mounted stop lamp (CHMSL) 10-amp fuse in the instrument panel (I/P) fuse block, and to the turn signal/hazard module. The turn signal/hazard module then supplies voltage to both of the trailer rear turn/stop lamp supply voltage circuits. The voltage from the CHMSL 10-amp fuse is to the CHMSL and the trailer jumper harness. The voltage from the STOP 15-amp fuse is to the stop lamps, throttle actuator control (TAC) module, and the cruise control.
I think The turn signal/hazard module has something to do with the lights flashing .From looking at a wiring diagram B+ voltage from the STOP LP fuse 25amp in the under hood fuse box supply's the brake light switch , from there it feeds B+ to VEH STOP fuse 15amp and VEH CHMSL fuse 10amp an to stop lamp switch signal to the turn signal flasher module which is suppose to control the trailer stop lights . Do you have a connection for a trailer hook up ?
Remove both LT an RT TRLR fuse's both 10 amp from the I/P fuse block an see if the problem goes away .
Do you tow a trailer ? Check the trailer connector for corrosion !
did it run before you changed column? if so you might eed to check you plugged everything in correctly again and make sure you swapped over all the electrical components including any steering lock electrics. if it didn't you will need a code read to find the problem. jon
