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I am new to the forums and hoping someone may have seen this or run into this before. I own a 2012 Silverado LTZ Crew Cab, 5.3L, 2WD, 102K miles, Factory radio with a harness plug for a an amp for subs. Electric drop down side steps. LED headlights & fogs. K&N Nighthawk Intake. Battery is less than a year old but i'm in Arizona so batteries get wrecked yearly. I recently took my truck to my local DIY car wash place where I always go. I washed my truck like normal and dried it off like normal. I did not spray engine bay, just the front grill area inward but not heavy. I don't usually use my AC but I'm in Arizona and it was about 109* outside. When I was leaving the car wash I kicked my AC on so I wouldn't mess up the clean windows from rolling them down. I proceeded to leave and as I was coming to the stop sign before making my turn and my truck's idle started to drop, truck kinda sputtered, the battery voltage dropped, the stabilitrak light, traction light, ABS light, all kicked on. The radio shutoff and turned back on. The AC shut off and turned back on, but switched from recirc to fresh. I turned the AC off and then back on again and continued to drive home. It did it a few more times so I swung into the gas station to park and see if it would do it while i was sitting there. Nothing. So back on the road again, turned my AC on and hit the next light, and it did it again. I changed my oil today (6/13), I cleaned my K&N air filter last weekend. I took a trip to Lowes this morning to see if it was still doing it, and sure enough it was. The photos are attached of it doing it in the lowes parking lot before I left. I rolled the windows down, turned the AC off and cruised home. It didnt do it again. So I am thinking the AC is drawing a huge amount of power from the system when I run it, or my battery is done for. Any helpful feedback would be appreciated.

I recently replaced my rear wheel ABS s nor after getting a service ABS Service Stabilitrak and Service Trailer Break system warning. I took my truck into a shop that I deal with all the time and they got the code c0050 for a faulty right rear abs wheel speed sensor. I had recently had the same sensor replaced about a 18 months earlier. I got a new sensor and replaced it myself, I also cleaned the mounting face on the rear axle as I read this could cause some issues. After replacing the service lights were still on, I also took it for a short drive to see the sensor needed to seem some movement to reset the warning lights, all with no sucess. I have a multimeter and have checked grounds going to the sensor and there is continuity when I check the ground wire from the sensor. I am begining to think it is the ABS control module??

Hello, for the past two years my truck (2015 Sierra 1500 All Terrain) has been intermittently flashing service lights saying the to service ABS, to service stabillitrac, and to service parking sensors. This would happen a few times a month and would immediately go away and I would think that it was just an annoying bug. But since about a month ago, when making low speed left turns, as well as any size bump, caused it to happen. This worsens into ABS light and stabillitrac light on for one day. While this happened you could feel the ABS pumping at when braking normally. This too went away the next day. I took the truck to the dealer for a diagnostic and told them all of this as well. After the $190 diagnosis they said it was the following codes (attached photo) C0035-04, C0040-04, and C0035-0F. they told me both front hubs were bad and needed replacement. They wanted $1800 for parts and labor. I told them thank you and paid the diagnosis and took the truck home. After the dealer the trucks electronics and 10x worse. Now the ABS and Stabillitrac lights stay on permanently, the brake light dings and flashes with any turn of the steering wheel. Also getting constant service ABS, service trailer brakes, Service stabillitrac, and reduced steering assist. I bought both front hubs and wheel speed sensors. I installed them and torqued everything back to spec. After reconnecting the battery and taking a test drive nothing had changed. I took the top panel from the dash off and did the ground mods. Again, no change. I’m going crazy trying to find the problem. I the. Took the truck to autozone for a code read. It still says the same three codes and it did, even after replacing the parts and sensors the dealer said would work. If anyone knows what the cause is it would be much appreciated. Thanks in advance, Dave

My wife and I were going to have a picnic by the ocean so went on a sandy (beach sand) road, meant for off road vehicles only. I switched to 4 Hi and while drove in the sand at less than 10mph. After about 5 minutes or so I had warnings of "service ESC" and "steering assist is reduced, drive with care". The truck, which is a 2019 Trail Boss, performed fine and I did not notice any difference in handling. I tried taking off the traction control, putting the truck in park, shutting the truck off for a while, but still the lights stayed on. The lights went off after driving about 5 minutes in 2 Hi. I also recieved emails from OnStar "there is an issue with the ABS system" and "there is an issue with Stabilitrack traction control". I don't think this is normal so it is at the dealer now. They said the initial results are the yaw sensor triggered for some reason...I don't think this is normal, the truck has 800 miles on it, but any ideas what this is or what it means? Thanks.

2020 Rocky Ridge K2 Silverado 5.3L 14K miles First time posting. Have been expereincing intermittent brake lights staying on after engine shut down for several weeks. Took it to the dealership, who ran a diagnostic on the truck and came back with "all things look normal, no codes". By the time I got home, the brake lights were in a state of constant "on" and I was able to restart the truck without applying the brake, even with the key fob outside the vehicle. Received several Onstar warnings to "Service Parking Brake". The parking brake had engaged and would not release. I disconnected the battery for 20 minutes, reconnected the battery which cleared the code. Called the dealership and was told I would have to leave it with them for awhile (several days to a week) to find out what the issue is. Would be ok except they do not provide a loaner car and rentals are thru the roof in our area ($100/day) so I have been living with this inconvenience until I can find an alternative way to work (80 miles rt). Then this happened over the past weekend: While driving back from the lake with my boat in tow, the truck went into a critical brake failure mode. Here is the series of events. Moored boat at dock and went to retrieve truck to remove boat from water. Could not unlock door on truck with FOB. Truck was "dead". No voltage activity. Used 12v portable jump pack to start vehicle. Let run for @20 min before proceeding to drive home with boat attached. Check engine light was on for 30 seconds then went out, but no warning dialog boxes. After we were on the road for @15 min, in rapid succession, I received the following warning dialog boxes: Service Trailer Brake System Service ESC Service Parking Brake Brake System Failure - 62 MPH Top Speed Check engine warning light Traction Control Off warning light ABS Off warning light As soon as I saw this, I tried to apply the brakes and they went to the floor. As you might imagine, it was chaotic in the vehicle when it became apparent that the vehicle along with the 6000lbs of Boat/trailer in tow was not going to stop in any timely fashion. Along with the trailer brake failure and vehicle brake reduction, the backup surge brakes on the trailer would not engage due to the lack of quick inertia braking force. I had the pedal to the ground and eventually we came to a stop. The rest of the ride home (2 miles) was a 5mph white knuckle event. The insult to the injury is there has been no warnings, email, text or posted on account from Onstar about this series of events but... I did get one on the same day that my Oil change is due. I am posting the screen shots I took after we came to a stop. It is being towed to the dealership tomorrow. I will let you know what happens. I absolutely love my truck. It is the 5th Chevy that Ive owned, and sadly the worst one of the bunch. M

Hi all, I am new to posting so please bear with me. I was on the beautiful Garden State Parkway... cruising at a bout 75 MPH. The truck got very sluggish, bucked a couple times and stalled. I had just filled my tank about 20 miles back. So thought it may have been a fuel problem. I tried to start it a few times it would start run very rough for a few seconds, then die. So I AAA for a tow. Found out that AAA is not allowed on the parkway, long story short $120.00 later I was towed 2 miles to the nearest exit. There was an advanced auto just off the exit, they scanned the truck, only code shown was a wheel sensor for both front wheels. So I purchased a fuel filter just before closing and replaced it in the parking lot. ?No luck after trying again to start the truck, I would up killing the battery. Got a tow back home. Now I have replaced the battery. Start the truck runs great for about 10 seconds, then the ABS light come on and the truck stalls. When the ABS light comes on it tries to run, but is almost like the timing gets changed. It runs really lopping then dies. If I try to start it right away, starts running rough again. Turn off the key, wait 5-10 minutes start it up runs great for about 10 seconds, then the ABS light comes on and lopes again eventually stalling. Has anyone had this issue or have any ideas on what it could be?

So I just installed a Rough country 6 inch lift on my 03 Silverado 1500. I unhooked all the break lines at the calipers to do the lift. When I got everything put back together it was time to bleed the breaks. When I tried they pumped up like normal but after starting up the truck the pedal then sank to the floor. I’ve done this a good 10 times to no avail. My abs lights are on in the cab as well as service break system, but all these lights where still on before I lifted my truck. I even changed out the master cylinder an tried to run the codes on my scanner. But it said that I had to clear trouble codes before I could do the automated bleed. But It won’t let me clear the codes anyway. I do have breaks but there almost absolute. Is there a way to bypass abs so I can have breaks again? I’m lost!