jamesok1

Thanks for the info fellas. Well, last night I attempted to reset the bcm by unhooking the battery for a while. I then touched the 2 terminals together before reconnecting the battery. No luck. I dropped my truck off at the dealer this morn and explained everything to the service advisor. I went and picked it up and they said I had a bad connection. Not too descriptive. The tech and service advisor I was working with were already gone so no more info than that. I plan on calling tomorrow to find out a little more. $143 total for 1 hour of labor. Feel like I dodged a bullet. Thanks for all the help. And tx-at glad your truck is back to working right.

Also worth noting is that I did not notice anything wrong with my truck after I jumpstarted it. I only had problems after I replaced the battery. There are not any procedures on how to replace the battery in the manual (?), but I suspect that the same rules would apply.

RollingThunder - I connected the jumper cables in the following sequence (which I subsequently found out was WRONG)- 1. Negative good battery 2. Positive good battery 3. Negative bad battery 4. Positive bad battery I did not look at the owners manual before I connected the cables. I opened it up and it has all sorts of cautions in there about turning everything (lamps, lights, radios, etc) off before jumping. Also says that doing this could help save the radio. What? Could destroy a radio by jumping the car? Oh well, hopefully folks will read this and not follow my footsteps. FYI - The manual says the correct way to jump the truck is to (these are the highlights and may be different for different models): 1 - turn off ignition of both vehicles 2 - unplug and turn off all unecessary components. 3 - connect the positive cable terminal to the positive of the dead battery 4 - connect the other positive terminal to the positive of the good battery 5 - connect the negative cable terminal to the negative of good battery 6 - connect the other negative to the metal bracket bolted to the engine (has an illustration in manual) 7 - start the vehicle with the good battery and let it run for a while 8 - try starting vehicle with the bad battery. there are specific steps for cable removal as well. Performing the BCM reset now. Will report back what I find but do not have high hopes for this magically solving everything.

Thanks for the replies! I will disconnect the battery for a while and reconnect to try and reset the BCM. Not sure why the BCM needs to be reset after just replacing the battery. Some of the other threads say to connect the positive battery terminal to the negative lead after the battery is out of the picture. Thats a common way to remove any charge from a capacitor. Has anyone ever done this? Thanks for the replies! I will disconnect the battery for a while and reconnect to try and reset the BCM. Not sure why the BCM needs to be reset after just replacing the battery. Some of the other threads say to connect the positive battery terminal to the negative lead after the battery is out of the picture. Thats a common way to remove any charge from a capacitor. Has anyone ever done this?

Hi folks! Yesterday I was leaving home depot and my truck wouldn't start. I ended up jumping my truck and bought a new battery (3 years, 50k miles and the original battery seemed about right time to need replacement). I installed the new battery and noticed that my front passenger and rear passenger blinkers were not working. I ended up finding a blown right turn signal fuse and replaced it but am still having issues. Checked all other fuses in all 3 fuse panels and they are ok. When I started the truck I found out that my radio/ac/backup camera were not working as well and that the display constantly says service 4wd. Might also be other issues that I have not uncovered yet. When I connected the positive terminal I noticed a little spark but did not think anything of it. I've replaced batteries before and this seemed nothing out of the ordinary. After researching it seems like weird electrical issues all trace back to the BCM. I believe that the turn signals are controlled by the BCM as well, so this also points to it being the BCM. Does anyone know if a reset is possible for the BCM and if that might help my problem? Most of the BCM items I've found about resetting have to do with security system related issues. Can anyone confirm the correct way to perform a BCM reset? Kinda ticks me off that a simple battery replacement could cause other problems...very easy to engineer in circuit protection to sensitive electronics. Truck is 2014 Silverado crew cab, 4wd, 50k miles. All help is MUCH appreciated! Thanks!