Security bypass

1999 GMC SUBURBAN
150,000 MILES • 5.7L • V8 • 4WD • AUTOMATIC
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ZACH RUDD
  • MEMBER
  • 1 POST
Is there anyway to bypass the security system so that I can start my SUV? because I replace my key and then cylinder and it will not reprogram the new key. I’m getting frustrated.
Jun 25, 2019 at 3:39 PM
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STEVE W.
  • ✓Experienced Mechanic
  • 15,366 POSTS
Welcome to 2CarPros. You cannot use the vehicle to program a new key if you also replaced the cylinder. You need to have the key entered into the system as a valid key using either a scan tool or a programmer. Usually it is cheaper to have a locksmith do that than a dealer but it depends on the area. As for bypassing it, not really possible to do without having a working key to start with.
Jun 26, 2019 at 4:34 AM
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