Jump to content

Electronic issues after battery change, HELP!!

sight_life

By sight_life
in Troubleshooting & Recalls

 Share

Recommended Posts

sight_life New Member

sight_life

Posted
Posted (edited)

2017 Chevy 1500 LTZ

Two weeks ago I drove home from work and turned my truck off while I went in to get my kids. when I came back out the truck would not start and acted like the battery was dead. I jumped the truck and noticed I had lost all saved data on the radio. I let the truck run for about 30-45 minutes in order to let the battery charge as I thought it was dead even though I had no issues before. I came out the next morning and the truck would not start again so I went and got a new battery and replaced it. The truck started just fine but now I have other issues, the radio does not work, the passenger side of the truck is dead, the HVAC changed temp but does not kick on, door locks do not work and the drivers side head light does not come on. I have torn my truck apart and replaced 5 blown fuses, checked the HDI connections, pulled and visually inspected all fuses possible, disconnected the battery and let it sit in hopes it would reset the BCM with no luck. I am at a loss, I am afraid to take it to the dealership as they want to charge me $145 to diagnose it. I have read a lot and things are starting to come back to the BCM from my research. Can someone please help me before I drop a shit ton of cash I don't have nor need to spend especially during these times. Also the truck runs and drives fine minus the electrical issues listed. 

 

Thank you in advance for anyone that helps. 

Edited by sight_life
JimCost2014 Senior Enthusiast

JimCost2014

Posted
Posted
On 3/23/2020 at 6:27 PM, sight_life said:

2017 Chevy 1500 LTZ

Two weeks ago I drove home from work and turned my truck off while I went in to get my kids. when I came back out the truck would not start and acted like the battery was dead. I jumped the truck and noticed I had lost all saved data on the radio. I let the truck run for about 30-45 minutes in order to let the battery charge as I thought it was dead even though I had no issues before. I came out the next morning and the truck would not start again so I went and got a new battery and replaced it. The truck started just fine but now I have other issues, the radio does not work, the passenger side of the truck is dead, the HVAC changed temp but does not kick on, door locks do not work and the drivers side head light does not come on. I have torn my truck apart and replaced 5 blown fuses, checked the HDI connections, pulled and visually inspected all fuses possible, disconnected the battery and let it sit in hopes it would reset the BCM with no luck. I am at a loss, I am afraid to take it to the dealership as they want to charge me $145 to diagnose it. I have read a lot and things are starting to come back to the BCM from my research. Can someone please help me before I drop a shit ton of cash I don't have nor need to spend especially during these times. Also the truck runs and drives fine minus the electrical issues listed. 

 

Thank you in advance for anyone that helps. 

Could be a dumb question, but when you jumped the old battery with another vehicle, did you follow the instructions in the owners manual?

If not, there is a chance you may have hurt some equipment.

  • 1 year later...
Nigel Ystenes Enthusiast

Nigel Ystenes

Posted
Posted (edited)

I had the same problem, brought it in and they wiggled the battery terminal connection, tightened it more, wiggled the connection, tightened it, and all the sudden the fan, radio, and blinkers turned on.  To fix the passenger side you need to hold the driver window switch down for 15 to 20 seconds, then up for 15 to 20 seconds.

Edited by Nigel Ystenes
  • 2 years later...
JapanNC77 New Member

JapanNC77

Posted
Posted

I had the same exact issues after changing my battery.  I ended up disconnecting the battery and let it set overnight.  I got up the next morning and reconnected everything and all of the problems were gone.  Everything is back to normal now.

  • 9 months later...
jcool223 New Member

jcool223

Posted
Posted
On 3/23/2020 at 9:27 PM, sight_life said:

2017 Chevy 1500 LTZ

Two weeks ago I drove home from work and turned my truck off while I went in to get my kids. when I came back out the truck would not start and acted like the battery was dead. I jumped the truck and noticed I had lost all saved data on the radio. I let the truck run for about 30-45 minutes in order to let the battery charge as I thought it was dead even though I had no issues before. I came out the next morning and the truck would not start again so I went and got a new battery and replaced it. The truck started just fine but now I have other issues, the radio does not work, the passenger side of the truck is dead, the HVAC changed temp but does not kick on, door locks do not work and the drivers side head light does not come on. I have torn my truck apart and replaced 5 blown fuses, checked the HDI connections, pulled and visually inspected all fuses possible, disconnected the battery and let it sit in hopes it would reset the BCM with no luck. I am at a loss, I am afraid to take it to the dealership as they want to charge me $145 to diagnose it. I have read a lot and things are starting to come back to the BCM from my research. Can someone please help me before I drop a ****** ton of cash I don't have nor need to spend especially during these times. Also the truck runs and drives fine minus the electrical issues listed. 

 

Thank you in advance for anyone that helps. 

did you ever fix the issue, i have the same issue currently. 

GMCustomerService Senior Enthusiast

GMCustomerService

Posted
Posted
17 hours ago, jcool223 said:

did you ever fix the issue, i have the same issue currently. 

We are sorry to see you are having concerns with your vehicle and would like to investigate this further for you. Please send us an email to [email protected]. Be sure to include your Username and Forum name in the subject line with additional details. We look forward to your email. 

  • Sad 1
  • 9 months later...
jared333 New Member

jared333

Posted
Posted

Having the same issue in a 2017. Combed through all fuses and none are blown. I disconnected the battery in hopes the computer will reset. If any of you found a firm fix please let me know.

  • 3 months later...

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • Chuck FB
      Joke Thread

      By Chuck FB · Posted

      An ultra wealthy man had the most beautiful daughter. But, there was a problem. Everything she touched would melt in her hands. No matter what, Metal, Wood, Stone. Anything she touched would melt. She could not feed herself. Because of this, men were afraid of her. Nobody would dare marry her. Her father was despaired. What could he do to help his daughter? He consulted doctors, scientists and anybody who could solve this problem. Finally one of them said, "If your daughter touches one thing that does not melt in her hands, she will be cured." He was overjoyed and came up with a plan. The next day, he held a competition. Any man who could bring his daughter an object that would not melt in her hands would be given billions of dollars to marry her. Three extremely intelligent and handsome young men took up the challenge. The first brought a very heavy steel rod, But alas, when the she touched it, it completely melted in a matter of seconds. He sadly went away. The second brought a beautiful diamond, knowing diamonds were one of the hardest substance in the world and would not melt. But alas, once she held it in her hand, it melted. He too was sent away disappointed. So now, there was one left He was very nervous & sweating. He approached the daughter & said, “put your hand in my pants pocket and feel what is in there." She did exactly what he asked. She felt something very hard. She held it in her hand, squeezing it as hard as she could. It did not melt & remained extremely hard. Her father was overjoyed. Everybody was overjoyed. She was finally cured. Nothing never, ever melted in her hand again. They married and they both lived happily ever after, raising a wonderful family. Question: What was in the the groom’s pants pocket??? Answer below ↓ M&Ms of course! They melt in your mouth, not in your hand. What on earth were you thinking?
    • asilverblazer
      Wow I'm in a pickle. (Broke down truck) and a story.

      By asilverblazer · Posted

      There's a bunch of tea leaves that you've read, but in any case the delayed timing is unusual. Not sure how that relates to the rich at idle vs. 'normal' while driving.   If you're in this deep, might be worth investigating, and re-learning the sensor. What have you got to lose? Plus, it properly fixes the timing cover leak.
    • asilverblazer
      Wow I'm in a pickle. (Broke down truck) and a story.

      By asilverblazer · Posted

      The only problem I have seen this cause is longer crank times. 
    • Atlas
      Wow I'm in a pickle. (Broke down truck) and a story.

      By Atlas · Posted

      Injector is being sent off today for rebuild and I estimate I'll have it back in 10 days or so.   It may not be the injector...of course...now that I've torn down the intake again. But, let's rule out the injector and replace those spider legs that have been almost rubbed through.   The truck has always had negative timing and I'm reading "normal" timing at warm idle should be +16 or so. I'm negative 16 to 25 or more, and it's always been like that since I bought it.   A light turned on upstairs last night in the old noggin. Rare, I know...   This will be wild, if it turns out to be the cause!   In 2001, according to the old service documentation, the muffler was replaced. Why? I have no idea, it wouldn't have been rusted through by then. But they did a crappy job.   In 2019, another shop replaced it and noted the prior install was poorly done on the work order. "Exhaust system vibrates on crossmember". Except...I guess they just left it be? I believe the husband, the couple who were original owners, had passed by then. Maybe she said it's just not worth it to have the exhaust system fixed and declined repairs. Very few miles were driven between 2019 and 2025.   The exhaust system vibrates heavily on the crossmember and you can feel it and REALLY hear it, even today. Not always, but at idle, it gets going pretty good sometimes.   What if....   ....What if that's enough to trigger one or both of the knock sensors? Could it be tricking the sensors into sensing knock, so it's pulling timing aggressively? Pulling timing heavily means it's firing after the piston reaches full height which means incomplete burn which means the O2 sensor is sensing a rich condition, which means I've been chasing my tail, and what I thought was an inconsequential problem (janky exhaust) has been THE issue for this truck for 25 solid years?   That would be wild. Maybe it IS wild.   The service documentation thereafter, for years, shows visits for rough idle, replacing O2's, replacing the cat, replacing plugs and wires, a misfire condition, like they could never solve the issue. The injector has been replaced 4 times in 80k miles, that's just crazy.   The secondary theory....   The engine has clearly had a leak at the front seal for a very long time (the greasy trench...). I think the truck changed hands quickly ~2025 because there's Napa receipts from someone I don't recognize in the ownership history. They apparently replaced the timing cover seal, and they did a terrible job. There's RTV smeared all over and the leak I had reduced to a weep by snugging the front oil pan bolts is now a leak again.   HOWEVER....I read about replacing the crankshaft position sensor. Any time the ckp sensor is disturbed or timing cover is removed, the truck requires relearning, and that can only be done through a bi-directional scan tool. Skippy with the RTV probably didn't do the relearn procedure is my guess. His scan tool is lost in a pile of RTV goo somewhere.   So, it's very possible the sensor has been disturbed and the truck is just running on the old learn data but not setting a code for anything. The distributor has since been replaced and so has the camshaft position sensor, so all bets are off for that thing.   In the theme of one step forward, two steps back, I returned the accumulator for the AC. The gal I've been working with at O'Really's has been great. She refunded it under manufacturer's defect and we compared it to the replacement I ordered, and sure enough, the replacement is machined very differently (and a gauge actually fits on it!).   Got it home, installed it, started vacuuming it down.... and I couldn't get good vacuum.   The high side service port, where I replaced the old GM ball valve suspecting that was a source of the previous leak....well, I've clearly exposed whatever pre-existing crack in the line where the service port is welded, and made it much worse. Blessing in disguise? Except there goes another $25, now I'm waiting for a replacement AC line.   In 10-ish days ALL the parts will be here. Rebuilt injector, new exhaust system, new cat, new high pressure AC line.   Oh, did I mention the squeaking ISN'T coming from the AC pump? The truck still squeaks when started, and there were words after I started it with the new AC pump installed. But, there was more to replacing the AC pump for just a squeak. A truck with good working AC is something of value, for the comfort alone.   I've ordered a new harmonic balancer because, 30 years is a good run for one of those. Rule it out. The squeak may be something more sinister, though. I'm worried about that ckp sensor and if it was shimmed correctly, or if the timing set was installed correctly. The squeak may be coming from UNDER the timing cover.   At this point, once I get it put back together, I'm thinking I'll take a 50 mile victory lap and then promptly put it up for sale. This truck is cursed. Betty, from beyond the grave, doesn't want anyone messing with her Blazer. Or maybe she's getting revenge for 30 years of shop visits with that thing.
    • KARNUT
      Gas Prices

      By KARNUT · Posted

      3.59 Kroger’s in Montgomery Tx. 20 cents higher than most around here. Very unusual. Saturday they were 3.49. 

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...