Hello, I was attempting to replace the ignition switch on this new to me 98 GMC C1500 and I locked out the immobilizer.
I think the OS is 16263425.
Can anyone help me with this? I can read/write eeproms/ecms but editing them is another challenge I have not yet attempted.
1998 GMC C1500 16263425 VATS
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TheRagnarok
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- cars: 1998 GMC C1500 5.0L (305 ci)
1998 GMC C1500 16263425 VATS
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antus
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Re: 1998 GMC C1500 16263425 VATS
Try this, its got the vats flag off. I don't know if there is anything more specific you need to do as well on that platform (DTCs etc). I would guess not but let us know how you go.
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TheRagnarok
- Posts: 2
- Joined: Fri Dec 26, 2025 9:22 pm
- cars: 1998 GMC C1500 5.0L (305 ci)
Re: 1998 GMC C1500 16263425 VATS
Flashed and truck fired right up! Thanks!
Security light is on solid and not blinking.
But that doesn't bother me as truck is running!
Security light is on solid and not blinking.
But that doesn't bother me as truck is running!
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antus
- Site Admin
- Posts: 10096
- Joined: Sat Feb 28, 2009 10:34 am
- cars: TX Gemini 2L Twincam 8psi
TX Gemini SR20 18psi
Datsun 1200 Ute
Subaru Blitzen '06 EZ30 4th gen, 3.0R Spec B
Subaru WRX 2007
Re: 1998 GMC C1500 16263425 VATS
Read your DTCs, there is probably one or more for VATS fail, and that needs to be turned off. Tell us which DTCs you have that are VATS related and can do.
Have you read the FAQ? For lots of information and links to significant threads see here: http://pcmhacking.net/forums/viewtopic.php?f=7&t=1396