Kbob

I purchased an aftermarket bumper to replace the OEM 2024 Chevrolet Silverado bumper. My blind spot sensors in the mirrors stopped working and I got the Side warning temporarily not working warning. For those with aftermarket bumpers, check to see that the sensors are electrically isolated from the new bumper. You can use an ohm meter to verify this. In my case the bumper came with a steel adapter that held the sensor and some 5mm steel bolts holding the adapter and a plastic blanking plate into an opening in the bumper. I replaced the bolts with 1/4 inch X 1 inch nylon bolts and nuts from Ace Hardware. This isolated the sensor from the bumper and the system now works and no warning. Total cost, about $10.00. The attachment to the bumper creates a ground loop and glitches the system