Stock head unit replacement question

blks10 · Post by **blks10** » Mon Dec 08, 2008 5:04 pm

I have heard rumors that if you replace your stock head unit with the same exact stock head unit, you have to have something in the truck reprogramed in order for it to accept the new head unit. does anyone know if this is true? Thanks

Post by **HenryJ** » Mon Dec 08, 2008 5:41 pm

It may be true. The head unit can be VIN locked. This will only work with the vehicle it was originally installed. I am told this can be corrected by the dealer, but have never done it. I don't know for sure what year that started. Probably with the RDS.

There is also Theftloc which must be disabled prior to removal.

blks10 · Post by **blks10** » Mon Dec 08, 2008 6:24 pm

I have heard there are codes to disable theftloc. I do not know mine, and i am pretty sure there is one. any way you can figure out what yours is?

Horsehammerr · Post by **Horsehammerr** » Thu Dec 11, 2008 2:28 am

Owners Manuel or Dealer. I'll try to remember to look at my manuel and get back to ya.

PATRICKH · Post by **PATRICKH** » Sat Dec 13, 2008 7:13 am

The theftloc is the only code I know of. But I'm still a newb to these crew cabs.

YellowCrewCabber · Post by **YellowCrewCabber** » Sat Dec 13, 2008 7:35 am

I have heard of this but haven't tried it.
http://www.z28.com/forum/showthread.php?t=36065

F9K9 · Post by **F9K9** » Sat Dec 13, 2008 10:12 am

YellowCrewCabber wrote:I have heard of this but haven't tried it.
http://www.z28.com/forum/showthread.php?t=36065

Steventruck wrote:I don't think that is for the RDS radio... It's for the 95-00 radios

rick wrote:With the RDS and later model GM radios you have to have the trucks ECM reprogramed to accept the new radio. This cost's about 80.00-100. at the dealership. A regular garage can do this if they have the equipment. * Even though some radios appear to look like the S-10 (ie Malibu Impala) they cannot be reprogamed to fit the S-10. It has to be a radio from an S-10 or I also think a 1500 series truck. The chip set in the radio and the ECM has to be compatible. Your factory radio will never lock up when you remove and install it in the same truck.

PATRICKH · Post by **PATRICKH** » Fri Dec 26, 2008 1:03 pm

Ok, STUPID QUESTION ALERT!

Do you have to do anything if you put in an aftermarket unit ?

green02crew · Post by **green02crew** » Fri Dec 26, 2008 3:19 pm

Buy an adapter or splice wires, no theftlock to worry about unless a stock stereo