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By Leslie Politron
Hi. I bought a new 2021 AT4 March 5. 20 miles on it. Drove home from the dealer (4 miles) and the next time I turned it on, CEL and OnStar diagnostics emails me to take it to the service department. They say they reset MAP sensor and send me on my way. Later that day, same thing happens. I take it back in, they say MAP sensory needs replacing. They had it almost 2 weeks waiting on the part. After they replaced it, everything went fine for about 1200 miles and then I get blinking CEL for about 30 seconds then it stops. Next day, blinking CEL for a minute or so, and then it turns solid. I took it back to the dealer and they say the only code pulled was P0300 misfire. They have no idea what’s causing it, and quite frankly I’m pretty fed up at this point. They’ve had my new truck longer than I have in the month I’ve owned it. Has anyone had something similar happen?
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By TruckGuy 94
I have a 2011 GMC Sierra Denali with a park assist problem I’m hoping someone can help me solve. A couple months ago, I started getting a sporadic “park assist blocked” error. This is pretty common as the sensors are covered in snow in the winter. However, I then noticed the sensors began to work sporadically even if they were clear. A month or so after that, the message changed to “service park assist” and the system automatically disables itself. The button on the dash shows the system is off all the time and when I try to turn it back on, the orange light flashes for two seconds but then disables itself again. I’ve checked the fuse and unplugged the battery but have not been able to get it to reset. Does this seem like a sensor issue or a control module? Any ideas for next steps? Unfortunately since the system is disabled all the time I can’t check to see if one sensor is malfunctioning as I’ve read about on other forums.
Update: when I started my truck once this week it randomly worked for 10 seconds then disabled itself again and hasn’t worked since.
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By boneill
Used “like new” condition off my 19’ Custom Trailboss . Truck literally has 8,000 miles on it still so these parts look like the day they did it came off the dealer lot. Asking $450 obo +shipping which I believe is about $65 to most places In the US. I changed my headlights and grille out recently after doing a headlight conversion so I have my grille and headlights that came from the factory for sale now .
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By boneill
Have a set of used Chevrolet Headlight Assemblies off my 2019 Silverado Custom Trailboss. Truck has 8,000 miles on it / lights are in “like new” condition with no issues .
asking $700 for the pair plus shipping (most places in US is approx $85). I’ve got more pics but I can only add 1 due to the restraint on attached pics on this post so message me if your interested.
I just recently did a headlight conversion , grill change to the high country headlight assemblies is why these are for sale. I also have the black custom Trailboss grille for sale if anyone needs that as well. It’s listed separately.
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By Tshock
I know there are a few different forums on this topic, but they seem to have gone dead. The steering in my truck clicks and clunks especially at low speeds, and the truck wanders on the highway. I am constantly holding the wheel to the left or right to go straight. I have had the intermediate shaft replaced per the service bulletin. After it was replaced some of the noises were reduced, but not eliminated and the truck will still not track straight especially at highway speeds. It almost feels like a bad tie rod end or ball joint, but the dealership said everything is nice and tight, and I checked just for my sanity. I also added a steering stabilizer in hopes this would help. Is anyone else having these issues, and have you been able to get them fixed?
2020 Silverado LTZ with 6.6 DuPIT5809.pdframax
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