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Low tire light was on, on the dash. Also said service TPMS. Couldn’t get anything to program. Put vehicle into learn mode and still couldn’t reprogram TPMS. Vehicle wouldn’t honk at each wheel. I bought a different BCM and had it clowned. Also bought a different BCM antenna and installed it. Put in another set of TPMS. Now when I put vehicle into learn mode it will honk after each wheel like it’s supposed to. Low light is still on. I have drove it for multiple miles low light still on. When I use my scanner for live data. It shows the tire pressure on each wheel bouncing around from 12lbs all the way up to 212lbs while driving. I’ve tried 2 different sets of TPMS and still the same thing. Does anyone have any ideas on what I need to do? Thank you for your time.
How long has your 2008 Hummer H3 had this problem?
More than a month
1 Reply
Hi - Dave here, contributing to RepairPal and providing expert advice since 2010. I frankly don't understand the concept of "buying a different BCM" and cloning it to the vehicle. What's the point? Did you do a diagnosis to determine that the BCM was of concern? I don't know that you've solved anything here. Sounds like maybe the sensors could be an issue because 17 or 18-year-old sensors probably lose battery power over time. I would probably restore your original BCM and perform normal calibration of the sensors – hopefully original equipment sensors – with a diagnostic tool, capable of handling that. Beyond that - seek guidance at a shop near you (for a cost less than you've already spent cumulatively). https://repairpal.com/auto-repair-near-me Click the link to find some shops near you who can help out!