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Tech II / VIN Relearn for OEM factory radio


slamkeys

Question

I just bought a 2006 Chevy Colorado for my daughter that had an aftermarket stereo installed, and I wanted to restore the factory radio. After researching the topic I found that I could acquire the original radio model and slap it back in, but it would require unlocking of the anti-theft feature.

 

I found a very nice, barely-used radio locally and purchased it from the original owner, who has a 2007 Chevy Trailblazer that she upgraded to a navigation system about a year after she bought it. The radio model is 15837848 (a newer replacement is now available with number 25998449, but that's what you'd want when ordering a new replacement).

 

I installed it, and when I turned on the ignition the radio display illuminated properly, I briefly heard the radio through the speakers, and then the expected "LOCKED" message was displayed after the radio read in my truck's VIN number and it didn't match the original Trailblazer's VIN number. All good - exactly what the anti-theft feature is supposed to do. The chimes also started working as expected, because they depend on the radio (aftermarket stereo systems will eliminate the chimes unless you add a chime integration unit AFAIK).

 

Now understand that this is the newer anti-theft system that doesn't use codes like my 2002 Yukon has. This system reads the vehicle's VIN number and it must match what it has stored in memory or else it locks itself. This is a better system than the old system IMO because you can disconnect your battery without having to re-enter the code to get the radio working again after you re-connect power.

 

Now here's my problem. I took the truck down to Lone Star Chevrolet here in Houston because they quoted me 60.00 to unlock the radio, and they were the cheapest of the three dealers I called (ranging from 60.00 to 125.00). I waited for an hour. Then two hours. Then the SA (Jay) comes out and tells me the technician can't communicate with the radio because it must not be compatible. I called bull because it is the exact same radio model that came out of the truck according to GM Parts Giant based on my VIN number, and also the fact that the radio was ALREADY WORKING WHEN I BROUGHT IT IN - IT WAS JUST LOCKED! He said he would double-check which radio model IS compatible with my truck and let me know. He comes back with the exact same model I have installed. Confused by that, he disappears for another half hour and comes back with the new model number that replaces the original model. I called bull again because now I know he doesn't understand what he's doing. I also asked if they could contact a more knowledgeable expert to troubleshoot the issue, but he tells me ALL of his technicians are experts (remember this for later).

 

After this, he tells me there's nothing he can do except sell me a new radio for 485.00. So in frustration I tell him no, and he charges me 70.00 to get my truck back (there was an additional ~10.00 shop charge for some reason).

 

Wait - I'm not done yet. After losing my money for nothing, I get in the truck with my daughter to leave the service department, and she informs me that the radio is completely dead now. I was in disbelief. I asked her to pull out of the service department and circle back in because now I was angry.

 

Part 2: The service manager approaches me after noticing that I was just there earlier and was now back in line. He was very apologetic about my case and I was comforted knowing he wanted to resolve it. So at his urging I left the truck there and got a ride home so they could spend more time on it.

 

No luck. I later received the call informing me that they can't fix it. I said I would come back to get the truck, but I wanted to speak to the technician. Here's what the technician admitted to me (Jose): He attempted to reprogram the radio using the Tech II tool and the TIS/SPS site, and after initiating the flash he went on break. I asked if the reprogramming completed successfully. He replied that he assumed so because when he returned from break it was all done. I asked if he'd ever had to unlock a radio that was from another vehicle before. He said no (remember - ALL technicians are expert here).

 

So here's the facts from the technician: He flashed the radio, and he'd never unlocked a radio from another vehicle before. Does this sound like he knows what he's doing? Also - why did they tell me they couldn't communicate with the radio? I'll answer that since I do firmware development for a living: He bricked the radio when he attempted to re-program it. That's why it no longer powers up in my truck. But he had to communicate with it to re-program it, so they conveniently covered up that little detail.

 

Here's what I thought he was supposed to do with the Tech II tool based on answers from other techs online:

 

F0: Diagnostics

 

(vehicle year)

 

(body style)

 

(make)

 

(model)

 

F6: Body and Accessories

 

Entertainment

 

F5: Module Setup

 

F0: Radio

 

F0: VIN Relearn

 

 

The Tech 2 will ask you if you would like to erase the theft data: "select yes"

 

 

That should have taken all of 2 minutes to complete. But now I'm stuck with a bricked radio and the dealership is taking no responsibility. What should I do? I feel like they owe me a radio due to incompetence of the tech who worked on and ruined it during the service.

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I actually had the same kind of problem. I bought a used radio with the same part # (button lights didn't work on my original) so i installed it and "LOC" came on the radio. So i took it to the dealer, after sitting around for 20 min. the service writer comes to me and says they can not "communicate" to the radio. Without "seeing" to the radio they could not pull any kind of information from the radio.

 

So after being told that, took another 40 min to get out the dealership. On my way back to the stereo shop i bought the used radio from...I noticed nothing on the screen. So i went back to the dealer and asked about it, i was given the answer of. "When they tried to reprogram the radio and no communicating fault being present, it internally locked the radio"

 

So at this point i was like crap, I'm screwed from the dealer and the stereo shop i bought it from. They told me the only way to get it back to "default" state is to ship it out. So they worked with me on that, got it "express shipped". (Even thought it took a couple days to get it back from the repair shop) I don't remember how much it was, but i was already invested in the radio so i went ahead and did it. (big mistake after i went with an aftermarket radio, i found out how much i was missing out)

 

So when i got the call, I returned to the dealer. Took total of 10 min... 5 of those was just sitting in the spot i parked it before someone came to get it. Has worked fine ever since. So no being able to communicate to the radio is the big problem that is going on. Did some research back then, but i can't find the site that explains it all, but i did find this one, first post on the link. http://www.gminsidenews.com/forums/f53/locked-rds-radio-problem-65364/.

 

So, the only thing i can think of is, your in the same situation as i was a few years back with no communication.

 

I went aftermarket and will never go back to factory radio ever again. Much less hassle, the sound quality is 100X's better, so many features, bluetooth...factory radio, unless it's navigation, is just junk to me now.

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I keep hearing that there must be some compatibility issue here, but I've not seen any evidence of that. Quite the contrary, these radios were installed universally in at least 16 different GM vehicles. They have an expansion connector on the back for add-on modules such as XM radio, external cassette player, etc. but the dealer told me there is no additional programming needed to enable those add-ons, they are plug and play. There's even a market for 3rd-party iPod/iPhone modules that simply plug in to the connector and interface with the radio using the "Band" button and the XM1 band.

 

I asked Kevin over at replacement radios (replacementradios.com) and he verified that he sells this model for my truck:

 

"We sell that radio with that part number for your vehicle." -Kevin

 

Also, when I look up the part number on eBay (15837848 - which is the model used for the US8 build code which mine has), the compatible vehicles are listed with no exceptions whatsoever, spanning a 3 year period:

 

 

Year    Make		   Model	    Trim   Engine	 Notes2007    Buick		   Rainier	    All	   All		 AM-FM-stereo-MP3-single CD US82007    Chevrolet    	   Colorado	    All	   All		 AM-FM-stereo-MP3-single CD US82007    Chevrolet	   Trailblazer	    All	   All		 AM-FM-stereo-MP3-single CD US82007    GMC		   Canyon	    All	   All		 AM-FM-stereo-MP3-single CD US82006    Buick		   Rainier	    All	   All		 AM-FM-stereo-MP3-single CD US82006    Chevrolet	   Colorado	    All	   All		 AM-FM-stereo-MP3-single CD US82006    Chevrolet	   SSR		    All	   All		 AM-FM-stereo-MP3-single CD US82006    Chevrolet	   Trailblazer	    All	   All		 AM-FM-stereo-MP3-single CD US82006    GMC		   Canyon	    All	   All		 AM-FM-stereo-MP3-single CD US82006    GMC		   Envoy	    All	   All		 AM-FM-stereo-MP3-single CD US82005    Buick		   Rainier	    All	   All		 AM-FM-stereo-MP3-single CD US82005    Chevrolet	   Colorado	    All	   All		 AM-FM-stereo-MP3-single CD US82005    Chevrolet	   SSR		    All	   All		 AM-FM-stereo-MP3-single CD US82005    Chevrolet	   Trailblazer	    All	   All		 AM-FM-stereo-MP3-single CD US82005    GMC		   Canyon	    All	   All		 AM-FM-stereo-MP3-single CD US82005    GMC		   Envoy      	    All	   All		 AM-FM-stereo-MP3-single CD US8

 

 

Not to mention that the unit was fully functional when I first powered it on, then it locked after reading my VIN number. I read somewhere that it might be important to enter the make/model/year of the donor vehicle into the Tech II in order to perform the VIN Relearn, which basically resets the theft-lock data.

 

I think maybe they should have asked me for the make/model/year or VIN of the donor vehicle before performing the reset, but they didn't. I could have provided it since I have the email and phone number of the lady who sold me the unit, and she even delivered it to me in the Trailblazer that it came out of, and showed me her aftermarket navigation system that replaced it.

 

Does anybody know if you have to enter the make/model/year of the *donor* vehicle in order to do the VIN Relearn? The online resellers say they will provide the VIN of the donor vehicle, but they also say "technically it isn't needed."

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My wife worked as a clerk at a Toyota dealership for years and the only thing they flagged there were angry customers who could potentially be surveyed by the parent company. I'm just going by what he said, please don't beat me up !! lol, but obviously from your post, it can very well be a possibility. You see, the service department loses its monthly bonus if too many respondents give a poor rating of the service department on the survey.Her dealership had an internal scam going whereby the service manager would put an asterisk (*) on the back of the service tickets for customers he knew were dissatisfied, and then the clerks would change information such as the phone number or address of those customers in the database when they were closing out for the day so they could not be contacted. Wow, that is crazy !! Rather shocking really!! [starts sarcasm] Makes you wonder what other companies do this kind of scams...or goverments...*gasps* [ends sarcasm} She said this was going on the entire time she worked there and was necessary because they tried to "upsell" almost every single job to make more profits, and that pissed off quite a few customers.

 

This Chevy dealership is #1 in Houston, and #2 in the state of Texas. They have been very cordial and forthright with me, and I have remained calm with them. However, GM needs to take responsibility for these kinds of issues because they are forcing us to go to the dealers to get this work done. $70.00 is too much to have a radio reset for an honest customer IMO. If it's that much of a problem to connect a digital tool and press a few buttons, then GM should get out of the radio business and forget about this stupid theft-lock feature once and for all. You just made perfect sense for GM, Force the public to pay "too much for a digital tool and press a few buttons"...GM should stay in the radio business and keep the theft-lock feature to make a quick $70.00 - $100+ (at other dealers you said)... business end...sound like an easy money maker to support the dealership and it's millions in it's costs. I see exactly what your are saying though, but think realistically. Who is going to steal a crappy factory radio anyway these days with all the high-end navigation systems floating around?

 

And I don't buy the argument that the technician was just following protocol. If there was a chance of the unit being damaged by his attempts to reprogram it, why wasn't I warned of the risk? They gave me no indication whatsoever that there would be issues with doing a VIN Relearn. And like I said - I asked the technician point blank if he had ever done this procedure before and his answer was a flat NO. He was obviously learning on the job.

 

 

^^^ My brotha from anotha mutha. :)

 

People wonder why we do everything in our power to AVOID the dealer. I've had it with all the BS involved in these new vehicles. Last time I brought mine to the dealer for warranty work (pulsating brakes ... with 50 ... YES FIFTY ... miles on it) man, that had to turn a knot in your stomach, brand new car and already having problems like that !!! the lot tech thought he was driving a Volt, & dragged the whole passenger side of the box across the garage door!! After I called asking why it's taking over a day to fix a simple brake problem, the gave me the great news. Then they give it back to me ... looking like an 8 year old buffed it out. Needed 3D glasses to look at it in the sun!! WTF ....

 

You'd think for $40 + grand GM would at least cut us a break, & make a few simple, easy to diagnose systems They do, it's called a Tech 2, makes diagnosing really simple and from the looks of it, does alot more then just diagnosing...it goes for $4k on a simple google shopping search...that's all, just $4k..lmao. ... or maybe ones that acutally lasted a year or more ... :lol:

 

If I can't figure a system out, it gets bypassed. If too many systems fail, it goes on ebay piece by piece. I'm done with this crap - why deal with it? I'll pick up a nice rust free 40 year old car from down south or out west. Problems solved, cheap insurance, cheap taxes, cheap purchase with ZERO payments. If it breaks down, I fix it on the side of the road with pliers and a flat head screwdriver. It's a win-win. :cheers:Not to mention, looks alot better and sounds alot better (of course if you take care of the older car or truck, looks wise)

 

You guys have WAY more patience than I have. I'd have fixed that radio with the 12 gauge ....

 

 

When will you be getting the truck fixed? so i can make sure to check this thread for an update on that date.

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It just makes sense to me that if I keep the eprom in the radio and the bcm ignighted that it would not lose any info, my understanding of the system that is in the Monte Carlo (which is vin recognition that it should work) I just think that Gm has performed some very strong engineering nightmares on their vehicles, and at this Point I am thinking that I may not ever buy a GM product again which is not my point it is just that it is pure nonsense to have to go thru something like this just to change a fricking battery. I will let u all know if it works for me because I do believe I am going to try it that way, can"t hurt at this point because if as you are saying that it will not work, I will have to spend 100.00 bucks anyway to fix it (crossing my fingers)

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^^^ My brotha from anotha mutha. :)

 

People wonder why we do everything in our power to AVOID the dealer. I've had it with all the BS involved in these new vehicles. Last time I brought mine to the dealer for warranty work (pulsating brakes ... with 50 ... YES FIFTY ... miles on it) the lot tech thought he was driving a Volt, & dragged the whole passenger side of the box across the garage door!! After I called asking why it's taking over a day to fix a simple brake problem, the gave me the great news. Then they give it back to me ... looking like an 8 year old buffed it out. Needed 3D glasses to look at it in the sun!! WTF ....

 

You'd think for $40 + grand GM would at least cut us a break, & make a few simple, easy to diagnose systems ... or maybe ones that acutally lasted a year or more ... :lol:

 

If I can't figure a system out, it gets bypassed. If too many systems fail, it goes on ebay piece by piece. I'm done with this crap - why deal with it? I'll pick up a nice rust free 40 year old car from down south or out west. Problems solved, cheap insurance, cheap taxes, cheap purchase with ZERO payments. If it breaks down, I fix it on the side of the road with pliers and a flat head screwdriver. It's a win-win. :cheers:

 

You guys have WAY more patience than I have. I'd have fixed that radio with the 12 gauge ....

I agree with you I am done with these new cars, even some vasoline would not help. I have an old 86 Chevy truck that I payed 2500.00 for 8 years ago and I puit a new crate motor and crate tranny in it some new upolestry all for less than 3000.00 and it is like new, very dependable and has never broke down in any way shape or form and as you say, if it were to break down I could probably fix it on the side of the road and move on. it cost me 12 dollars a month for insurance. would not trade it for any new truck on the dealers lot even if it was an even swap --By the way u can just barely see the piece of crap Monte Carlo setting behind my old truck post-137219-0-26539900-1418329203_thumb.jpg

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I had the new radio installed yesterday, so this dealer experience was ultimately positive. I shook hands with Jay after signing the service ticket for $0.00 in additional charges. I also gave my original radio to them for whatever purpose they have for it (perhaps diagnosis of the failure for future prevention).

 

As far as learning anything about the Tech II / VIN Relearn procedure, I'm afraid we ended up like the Coen brothers' "Burn After Reading" movie:

 

 

Senior Official: "So what have we learned from all of this?"Agent: "Uh ... nothing, sir."

 

 

I installed a USA*SPEC PA15-GM iPod interface on the system last night too, so my daughter can use her iPhone to control the OEM radio using the CD/AUX controls. All seems to be working fine as far as the audio is concerned.

 

The only thing I noticed last night was the red blinking security light for the radio was not blinking after my daughter locked the truck with her key fob. It should blink when the theftlock system is armed, so I need to investigate this issue next. Is it conceivable that the dealership somehow installed this radio without enabling the theftlock feature?

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Actually I think the red blinking light issue was already explained in this topic:

 

Condition/Concern:

 

Some owners may comment that the red radio theft LED does not flash after replacing and programming the radio. This may be due to the "enable counter" internal to the radio not being reset to 0 counts from the exchange center.

 

Recommendation/Instructions:

 

During normal driving, the counter will count down to 0 after enough ignition cycles. If an owner is requesting the LED to operate immediately, the ignition key will need to by cycled up to 255 times on/off to clear the manufactures "enable counter". To count as a key cycle, the ignition must be left in the run and off positions for least 3 second each time. On then Off is considered to be 1 count.

 

 

It appears that the red light will eventually start blinking after the required number of ignition cycles has been reached. Time will tell.

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If anyone asks me why I'll never buy new again, I'll point them to this thread. :crazy:

 

Sorry man .... wish I could help!!

 

My Silverado has 51k on it & sounds like it might not make it to 60k ....let alone 200k like the old ones used to. :nonod:

 

 

I felt much better after violently dismantling my 2000 GMC Jimmy. You'd think I'd learn from that .... but I went & bought the '07 ... :banghead:

 

Fool me once, shame on me ..........

 

Jimmypartingout11.jpg

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After reading all the posts here I have a question. I am going to change the Battery in my 2007 Monte Carlo, and I have the RDS radio with CD player. My question is this----If I use a good battery and run a good heavy duty jumper to the back side of the positve cable and one to the negative cable and keep everything powered up during the battery swap, will that prevent my radio from going to the locked state?

 

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you have all the ammo you need ,your options are:

 

1) make an appt with the dealer principal and serive manager with all printed material,work order etc,,if unsuccessfull,,,,,

 

2) call the regional or district service manager(whatever term is used in the Texas state,we use DSM up here) and discuss the situation with him,,,,,,FYI,,dealers hate having to deal with pissed off DSMs !!!!

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I talk to a buddy of mine that i visited with at lunch, i showed him your thread on my smart phone. He is a GM Tech for 13 years. He has heard of problems like that, and that it is rare, but it does happen...nothing you can do about it either. (Other then shipping it out for "repairs"/ zero it out.)

 

Did you tell them it was out of another car (not a colorado) before they tried to unlock it? (I'm going to guess you didn't)

 

Well, i have shown you GM documents that it happens, it has happened to me, and with the links i provided it has happen to other GM owners. Yet you still blaming the Tech, service writer and the dealership for something that is possible (and documented) Seems like you have your mind made up on what you want to believe or imagine... so I'll leave you to that. Guess my first hand experiance with the same exact problem is not relevant.

 

Hope you get your truck fixed and your truck is not "red flagged" at the dealership. (Found that out from my Tech buddy, it's when you take the car into the dealership, find records of your truck and the red notations that are read by the service advisor and the tech. Basically saying what happened, what they did, and how your reaction was...if any of that is something the advisor or the tech doesn't want to deal with...your passed on to another advisor till a advisor decides if they want to deal with a "headache" customer. Top of that the techs will pass on the work cause they don't want to deal with "headache" problems. Basically he told me, the "headache problems aren't worth the small money they are going to spend" Rather pass the couple bucks and not deal with the "headache" customer.

 

I was like "really!!!??!?!?!?" you guys do that!?!?! That is so messed up. But i guess it makes sense as far as business goes. If they have three ppl behind you willing to spend the same money or more then you..and your going to be a hassle...they pass you on and grab hold of those three ppl behind you.

 

I told him i was going to bring a bottle of jack and a liter of coke to my service advisor next time i go in. lmao.

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