Hi! I m from Malaysia, I wonder if your company have any branch (or distributor) here? My chassis number is 5GRGN23U53H144268 2003 hummer H2. I changed my brake pads and even changed my master cylinder, but my brake pedal still keep sinking. I m losing my mind and I m tired of repairing it, I think my ABS is the culprit but I m not sure. I need professional's advice. Thanks a lot!
Thank you for reaching out. Unfortunately, we can't do diagnostics over the internet. You can use a diagnostic scan tool to scan for codes. Or any auto parts store can do it for you for free. After you have it scanned, post the DTC codes here.
When you have codes it is easier to determine where the problem is.