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Message: <blockquote data-quote="Moto826" data-source="post: 28137" data-attributes="member: 14589">Hello all,I've owned my truck for 4 years now and she's had her fair share of use and abuse. It's a 2005 GMC Sierra 1500 2wd with a 5.3 LM7.The problem i'm currently trying to solve is that I keep getting an ABS/Brake light, "Serivce Brake System" Message and a c0245 from the EBCM when the truck reaches 35-40mph. The light is NOT on when the truck is started, or when it is turned off and restarted again, it is only present when the truck is being driven. However, the code is still present as a history code when you scan the truck after turning it off.I had a mishap in 2024 and had to replace the entire rear axle assembly with a junkyard replacement. This changed the axle ratio from 3.23 (confirmed from factory RPO code) to a 3.42 (found RPO code on junkyard donor)About 2-3 months after replacing the rear axle, the shift solenoids in the transmission went out. Had CEL's related to that. Had it serviced by a well-known, and trusted family-mechanic, as well as purchased an Edge Cs2 tuner to correct the rear axle gear ratio in the ECM & TCM.However, about 2 years after the rear axle replacement... I'm still getting this light every time I drive the truck over 35-40mph and it has the same issue where it goes away every time the truck is turned back off and on again.So what the hell is the issue if I've already reprogrammed it?HP Tuners is unfortunately out of the conversation since I live in California and would like to stay smog legal.Do I simply need a reprogram of the ABS module with someone that has a scanner capable of doing so? What kind of scanners are capable of this? Am I going to need to search for a tech 2?I've been hunting this down on google and chatgpt for the last year and a half but I'm hitting a wall and I'm stuck.Any and all help is appreciated. I'm sorry to drag this whole thing out, I know it's a complicated situation. For those of you that did stick around and read-- thank you, now go crack yourself a beer. You deserve it.</blockquote>