This is a brief explanation of how to VIN unlock a GM TNR Radio to test functionality outside of a vehicle. This specific unit is from a 2005 Escalade, but many GM radios in this year range operate in a similar manner.
Just an FYI, I used this exact same process of choosing the nav radio and then clearing the VIN info to relearn a junkyard base model radio with buttons and tape player
I have a 2006 gmc sierra 2500hd with the oem rear dvd player and was wondering if when the dealer programs it to my truck if I can still play the players audio through the trucks speakers when I change the source to the player?
I’ve got a 2004 Tahoe and am trying to put a nav radio out of 2006 gmc Yukon Denali. Would you be able to relearn the vin? Dealer told me that the part number was not listed in the tech2
@@andyb1185 I’m in the southeast. I’m going to try and reprogram my eeprom with my vin. I’ve seen people have success with this and it’s a much cheaper option
Hey there, just wondering--would you unlock mine if I mailed it over to you? I have a GMC Envoy and I'm thinking of putting that same exact unit into mine. Please let me know. Thanks.
Let me try again, Great video, I’m trying to do the same thing, While I wait for my tech2 to arrive, I built a small harness with the C1 radio connector on one side and an OBD port at the other, I connected 4 wires between them. +12v, 2 Grounds, and Class2 J1850 signal. I plugged a 15800001 in when I press/toggle the power button, the screen toggles between the TOD(time of day) and blank screen. I was hoping that it would display a Theftlock message or the normal power on message. Is there something that I need to do to wake it up like putting another class 2 module on the bus so that the radio wakes up. When I plug in my fancy OBD scanner, it does say the radio part number, but it won’t read the live data so I believe I have wiring correct since it appears it can talk to it.
..... or does your little network have a BCM in it as well and it drives the IGN0 ,Ign1, and Acc inputs to have the BCM think its in a vehicle/network and its then sends the appropriate message to the radio so that can turn itself on?????
I have this radio in my 2006 Denali and have been really happy with it. No biggie, but the date and year no longer are correct. And from searching it seems to be a common problem. I thought this was updated through the GPS? Am I wrong?
@@andyb1185 you press on the lower right under the time and a window pops up that shows the month and year. It always worked and as of 18 months ago it went back to 2000
@@jewllake I had no idea, I'll have to try that in my truck when it comes out of winter hibernation. I ran into a similar issue with a 2001 Toyota Avalon. The year stops around 2018, but reverting back to around 2002 was able to make the date and day of week display correctly
I have a Hummer H2 2009 SUV LUX ... "N" Truck product line I also have a GM TECH 2. My GM Tech 2 does not show a "Nav Radio" In The Menu. It only shows a "Radio'" and below shows "Digital Radio" I just bought a Brand new GM Replacement NAV Radio to replace the original one. It came thru Locked. There is no menu for "Relearn Vin" on the TECH 2. I can call up on the Tech 2 the Original Radio ID and other numbers but nothing where it says "Relearn Vin" Is my Tech 2 out of date? I have followed your video but it does not lead me to Relearn Vin. Thanks: Mark
