DannyTrailBoss

Forgive me all of the trolls, I know this is probably posted 10000 times but I searched for multiple phrases and can’t find much on the topic. I’m looking for a plug in tuner/chip for my 2021 6.2L Trailboss and literally everything I find online is universal or for the 5.3L. The few that do show up on searches literally have the same model number or sku regardless of what drive train I put in the search on multiple sites. Have looked for videos and reviews on tuners for my specific application and I don’t find anything that specifically states it is tuned for my vehicle. any help would be greatly appreciated.

May want to check your transmission cooling lines to see if they are kinked or blocked in any way. I just posted on this because I have a 2021 TB 10speed 6.2 and found a link about this issue. Mine has been slamming between ALL gears the past few days. https://www.gm-trucks.com/silverado-sierra-transmission-jerk-shudder-stall/

2021 and newer trucks and suvs (all transmissions) also have an issue with hard shifting. I found a thread on another site that states there may be a transmission cooling line that was kinked or twisted upon manufacture of the vehicle. Covered under warranty - take the truck to a dealership and they will inspect/replace the cooling line and check fluids. Should be a quick fix. https://www.gm-trucks.com/silverado-sierra-transmission-jerk-shudder-stall/

How do you do the hard reset???

I have a 2021 trail boss and having the same issue. I’m not plugging a phone in but I don’t use the radio only Bluetooth. Always on my phone and every time I get in the truck the equalizer is reset to 0s. It has only kept my settings 2-3 times when my truck was off for less than 5 minutes. Other than that it resets every time. If anyone has heard of a fix, or has any luck with dealership please post. I’m almost thinking about adding a powered sub and powered component tweeters to lift the highs and lows when the equalizer is at 0 unless someone knows how to fix the issue.

That’s the diffuser I’m installing as well, just the mounts seem to only fit up to 2018 models for the curved light bars. Some sites when I enter my vehicle info say the mounts for 2018 models fit my truck even when they say 2015-2018 on the parts. I might just say screw it and buy a cheap set to see if they fit a 2021 and if not I’m out $50 or less.

Over windshield

Over windshield

New owner of a 21 Custom Trailboss and looking to install a curved light bar. I searched the forums and I’m not sure if I’m just not typing correct key words but can’t seem to find any help. I’ve found 50”, 52”, 54” curved light bars (universal) and my only thought is I need truck specific brackets for the specific size curved light bar I purchase. I’ve been having some trouble confirming that the light bar brackets are specific to my truck AND the width of a universal light bar, since let’s face it the brackets have to be different lengths of the bar is longer/shorter… any suggestions?