jgisonfire

I got the truck back, something about replacing the T9 in the DC to DC converter was the problem according to GM Techs. It was actually done Friday morning, but the dealership wanted to make sure it was fixed this time. It's worked fine so far today... fingers crossed that stays the same!

Update this morning. Truck is dead again this morning... so now for the 3rd time the truck is going in for starting issues... I will continue to update in case anyone else is unlucky enough to have this happen to them.

I got the truck back today, with a brand new battery replaced under warranty. There was a bad cell in the original battery. When I went to pick up the truck the check engine light was on. I went back in and they were going to see what was needed to fix it. After about 20 minutes (this is well after the main techs are gone) the guy comes up and tells me the codes are related to the DC to DC converter and since I need to be at work early in the morning, I could take the truck and return with it when I am ready. When I got home I wanted to see the codes, so I plug in my code reader and am SHOCKED to see 30 DTCs (14 different ones). The codes and what I could find on them are listed below. One of them has something on the NHTSA's website... It says GM wants to examine vehicles with these codes within 5 hours of Detroit. B2B0E PIE0546 https://static.nhtsa.gov/odi/tsbs/2019/MC-10169366-9999.pdf C0021 Right Front Wheel Speed Sensor Circuit Open Or Shorted To Battery C054A ?? EBCM Control Valve Circuit - Limited Information C0580 Right Front Actuator Circuit P2534 Ignition On/Start Switch Circuit Low Voltage P3051 DC/DC Converter Actuator Voltage Sensor Circuit 1 Low Voltage P3052 DC/DC Converter Actuator Voltage Sensor Circuit 2 Low Voltage P3055 DC/DC Converter Actuator Voltage 1 Performance P3056 DC/DC Converter Actuator Voltage 2 Performance P305C DC/DC Converter Ignition On/Start Switch Circuit Low Voltage P305E DC/DC Converter Crank Control Circuit Low Voltage U18A7 Lost Communication With Power Supply Transformer On Powertrain Expansion CAN Bus U3006 Control Module Input Power 1 U3007 Control Module Supply Circuit 2

If anyone is following along on this, it happened again on Sunday. Truck attempted to crank 1 turn over but no go. I waited to start it because the dealership was closed. I attempted to start it on Monday (not realizing the dealership was closed) and the truck wouldn't start. A bunch of messages came up on the screen (see below for the list in order). Truck was picked up by the tow truck this morning and taken to the dealership this morning. It's hooked up to a diagnostic machine overnight to see what's draining the battery and causing all these issues! Traction Control Off Traction Control On Brake System Failure - 62 MPH Top Speed 4WD Off Brake System Failure - 62 MPH Top Speed Service ESC Service Parking Brake Battery Saver Active Traction Control On Traction Control Off Service ESC Service Parking Brake

I found the information on it. It is in the AutoSync group under "*Stop/turn light separate* looong post" from November 10, 2021. The post was made by Daniel Berntsen. I wanted to link to the post, it's below if it works. https://www.facebook.com/651732636/videos/249687883717247/

There is a way to have the reverse light blink instead of the red brake lights. Sorry I don't have a link, I couldn't find the info, but I think it was on the BT Dieselworks facebook page about their BCM Tuner.

I've searched and found others who have had the codes above, but I wanted to see if anyone has run into what happened to me today. I haven't driven the truck in a few days. It's sat in the garage in Southern Indiana with slightly above normal temps. This morning I walk out and attempt to remote start it (like I always do, because I love the sound the GM Performance exhaust makes LOL) and the engine attempts to start, turning over very slowly what sounded like less than 2 times. Concerned I unlocked the truck and got in. Using the push button the engine turns over very slowly again 4-5 times and then starts. When it starts my compass tells me it needs to be calibrated, my fuel gauge shows absolutely empty (I had at least 1/4 tank), and my check engine light comes on. I turned it off, exited the truck to reset things. Restarted, was still slower than normal turning over, but it started quicker. The fuel gauge was still on absolute 0 and the check engine light was on. I called the dealer to make an appointment, and checked the codes with a scanner. I had 2 C0021, and 2 P25A2 codes (I have all updates and TSB's done as confirmed by the dealer). I thought it might have been a battery issue, as my fuel gauge started going up as I was driving, finally getting to where it should have been by the time I got to the dealership, and the check engine light went off, because of course it did... I spent 3 hours at the dealership, where they say they tested the battery, and all of the computers with nothing showing as wrong. The manager gave me his card and said to call his cell phone if the light comes back on and head in so they can test it when the light is on. I guess my main question is does anyone here think this could be caused by the speed sensor staying on and draining the battery (even post TSB)? Or maybe something else electrical? Thanks in advance for thoughts/options on this

Hi everyone! I like the idea of getting something like the below to use on my 2019 High Country Silverado. They appear to be for a 2014-2018 truck, but look to me to be very, very similar to what the 19+ has (and have the buttons for the passive entry that would be needed). I'm not tech savy enough to know if these would work for my truck (obviously the lighted part will be custom wired, but will the handles and passive buttons work)... Anyone here have thoughts? I know @pgamboa has info on the old body style trucks, but not sure who may know for the new ones. Thanks in advance for any help! https://primodynamicleds.com/products/gm-door-handles-2014-sierra-and-silverado?variant=32276090028106

I think you need to make a playlist with all of the music in it, so you can then say "Play playlist [name]" and it would select from the full list of songs. Down side would be that it would probably play the same song to start, but with shuffle I think you'd be ok after that.

At least the ratings are because of the speed rating of the tires on the truck, instead of just some arbitrary number someone pulled out of their hind quarters.

I think a this point everyone knows about the speed limiter on the trucks (I think there are 3 different levels for the 1500's). My 6.2 High Country is limited to 112 mph. On a ~15 mile straight stretch of road with no traffic (it was 6am) and discovered Cruise control is limited to 108 mph. This picture was taken after my journey in Mexico was over and I was safely stopped. I also learned that if you have cruise set at 108, the truck takes it's time getting from 100 to 108 (way longer than if you do it manually), and that if you use the pedal to get it to 112 so the speed limiter kicks in, cruise control is turned off. I have experience driving cars fast, don't try this at home without a professional's help.

I got this one, and use the "0.75 inch Bonus" on my truck. I still get most of the radio stations with it, in a non-major city. I wish it was less pointy, but I think that helps with reception. https://www.amazon.com/gp/product/B00O86Z610/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1