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2008-2013 Cadillac CTS General Discussion Discussion, 2008 Gen 7 to Gen 8 Onstar w/ Bluetooth Success in Cadillac CTS Second Generation Forum - 2008-2013; Scout, nice sarcasim. You are making me feel bad (sarcasim too) - maybe you needed a little more patience or ...
  1. #151
    6speedRS is offline Cadillac Owners Member
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    Re: 2008 Gen 7 to Gen 8 Onstar w/ Bluetooth Success

    Scout, nice sarcasim. You are making me feel bad (sarcasim too) - maybe you needed a little more patience or could have sent a second PM or even posted on the forum like Matt.

    I tried to answered your PM - maybe unsuccessfully, and I checked online (this forum) to post back to you, but you had already purchased one somewthere else, so I sold it to Matt - otherwise I would have sold it to you. I only reposted that I still had mine after you posted that you already picked one up. I just wanted to mention that was only a couple of days between your original PM and me checking the forum. On the other hand Matt was quite easy to get along with by email so it worked out anyway.

    I just checked for another one at the junk yard where I got mine from and from the other junk yard that had one while I was searching for one. Neither have one - if they had I would send it to you.

    Oh well. Good luck.

  2. #152
    Gramzster is offline Cadillac Owners Fanatic
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    Re: 2008 Gen 7 to Gen 8 Onstar w/ Bluetooth Success

    Quote Originally Posted by EdGrimley View Post
    Gramzter, understand that you installed the gen 8.0 unit (25990227) correct? Have you experienced any of the problems that have been documented with gen 8.0 and led to the release of the 8.1 unit (20787642)? Reason I ask is that I have bought a gen 8.0 unit myself to put in my March 08 CTS (missed bluetooth by 3 weeks!) and am ready to install, but want to know if I should keep looking for a gen 8.1 unit, approach my dealer to try to get the 8.0 upgraded to 8.1 through the recall program, or just go ahead regardless and hope for the best.

    Thanks by the way for the original groundwork on this project and excellent install guidance. (In advance of the install, I have drilled a small hole in the rear deck under the bolt in question so I can get a socket on it if necessary - seemed like a prudent investment of 5 minutes!)
    You're welcome Ed!

    Sounds like we were in the same boat. Although I purchased my car back in October, my car was made 3/28/2008.

    Aside from my caller ID not working (which may be due something else...agreif says his works), the module has been working great. Everything displays on the DIC properly, my OnStar LED has been solid green* and I've used OnStar a few times and haven't had any problems. I also get my monthly diagnostic reports.

    Although the 8.0 module was part of the recall, after doing some investigation, I don't think the entire batch is affected.
    Take a look a link at this over at the Corvette Forum: http://forums.corvetteforum.com/1572976141

    You'll notice the Station ID's of the modules affected by the recall. However, I don't think 100% of the modules listed are affected.

    My module is listed within the Affected Unit STID Range, but works great. My bet is that the ranges listed have a higher % of affected units (but probably still have units that are okay, like mine).

    The only way to find out is to try it out. You can quickly find out if you connect the unit and press the onstar button. If it connects to OnStar (you don't even have to reach an advisor, just hear the "music on hold"), you should be okay. Affected units have a problem where they will continuously "beep" (indicating it's trying to call Onstar... just like normal units), but the call never gets made.

    *I did have a problem with my Bluetooth Antenna, but as mentioned, this is independant of the OnStar module and is not on a parts restriction. I was getting a periodic red OnStar LED. I Called OnStar, they told me the problem was with the bluetooth antenna, I purchased a replacement and it's been green ever since.

  3. #153
    matthayes3741 is offline Cadillac Owners Fanatic
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    Re: 2008 Gen 7 to Gen 8 Onstar w/ Bluetooth Success

    As stated Gram, my caller ID works too. If you need I can post a pic or video of it for your comparison. I have the Onstar 8.1 though if that makes any difference. Tomorrow I am going to see if it announces the call every time. It always shows the caller ID though.

    In case I forgot to, I wanted to thank you for all of your ground work as well. This completely made my car! My car was built around the same time as yours; I purchased it last December. I was unaware of the bluetooth discrepancy and am glad that it worked out in the end. Especially for only $200! I had been comparing my car and a black one. I'm not sure when the black one was made, but my mind was quickly made up after seeing my silver CTS. It was the Premium Luxury edition and came with the chrome rims and remote keyless entry. That's the second best thing about my car. Not having to take the keys out of my pocket!

    Thanks again!

  4. #154
    Gramzster is offline Cadillac Owners Fanatic
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    Re: 2008 Gen 7 to Gen 8 Onstar w/ Bluetooth Success

    Quote Originally Posted by matthayes3741 View Post
    As stated Gram, my caller ID works too. If you need I can post a pic or video of it for your comparison. I have the Onstar 8.1 though if that makes any difference. Tomorrow I am going to see if it announces the call every time. It always shows the caller ID though.

    In case I forgot to, I wanted to thank you for all of your ground work as well. This completely made my car! My car was built around the same time as yours; I purchased it last December. I was unaware of the bluetooth discrepancy and am glad that it worked out in the end. Especially for only $200! I had been comparing my car and a black one. I'm not sure when the black one was made, but my mind was quickly made up after seeing my silver CTS. It was the Premium Luxury edition and came with the chrome rims and remote keyless entry. That's the second best thing about my car. Not having to take the keys out of my pocket!

    Thanks again!
    Glad to have Helped (thanks to csalmon and ewill3rd as well!).

    It's been an interesting project aswhen doing this, it was pretty much a shot in the dark. However, as I looked at the service documents, I realized there was a chance this would work..... It was quite a surprise to find out it was pretty much plug-and-play (aside from the OnStar configuration).

    Thanks for letting me know about your 8.1. I figured it was something that affected the 8.0 modules, but now I realize it's probably something related to the configuration of mine. No Biggie.

  5. #155
    scoutpilot is offline Cadillac Owners Fanatic
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    Re: 2008 Gen 7 to Gen 8 Onstar w/ Bluetooth Success

    Quote Originally Posted by 6speedRS View Post
    Scout, nice sarcasim. You are making me feel bad (sarcasim too) - maybe you needed a little more patience or could have sent a second PM or even posted on the forum like Matt.

    I tried to answered your PM - maybe unsuccessfully, and I checked online (this forum) to post back to you, but you had already purchased one somewthere else, so I sold it to Matt - otherwise I would have sold it to you. I only reposted that I still had mine after you posted that you already picked one up. I just wanted to mention that was only a couple of days between your original PM and me checking the forum. On the other hand Matt was quite easy to get along with by email so it worked out anyway.

    I just checked for another one at the junk yard where I got mine from and from the other junk yard that had one while I was searching for one. Neither have one - if they had I would send it to you.

    Oh well. Good luck.

    Yeah, I know. I'm a jerk for offering to buy your item.


    To EdGrimley:

    Beware of the 8.0 box. While Gramzster has a good one, I got a defective one, which is funny because it was actually sold through AutoCraft Electronics to a middleman as a replacement. Mine is within the affected StID range and exhibits all the symptoms (i.e. the light is green but the box cannot contact onstar). It attempts to contact, but can't ever connect.

  6. #156
    sfv41901's Avatar
    sfv41901 is offline Cadillac Owners Connoisseur
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    Re: 2008 Gen 7 to Gen 8 Onstar w/ Bluetooth Success

    Ive got to source a 8.1. Having no BT sucks

  7. #157
    wiz1der is offline Cadillac Owners Member
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    Re: 2008 Gen 7 to Gen 8 Onstar w/ Bluetooth Success

    also looking for an 8.1, if anyone has a source or has one for sale, PM me, i will pitch for a 6 pack of imported for your time... lol.

  8. #158
    EdGrimley is offline Cadillac Owners Member
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    Re: 2008 Gen 7 to Gen 8 Onstar w/ Bluetooth Success

    OK - just finished switchover made from gen 7.0 to gen 8.0 unit and accomplished in just 45 minutes! I had predrilled a 1 inch hole under the deck to prepare for the possibility of the unreachable nut problem and I'm glad I did, as it would have been a problem, but with access from underneath it was a snap.

    Seems to be working fine, although have not had it flashed to my VIN yet obviously. I may not as I never used Onstar except for the phone. Paired it with my iphone no problem. Previous owner was obviously using it as his phones are still in memory.

    Will be watching carefully for problems noted in TSB, but not all gen 8.0 units are problematic.

    Just happy to have Bluetooth for now.

  9. #159
    matthayes3741 is offline Cadillac Owners Fanatic
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    Re: 2008 Gen 7 to Gen 8 Onstar w/ Bluetooth Success

    Quote Originally Posted by EdGrimley View Post
    Seems to be working fine, although have not had it flashed to my VIN yet obviously. I may not as I never used Onstar except for the phone. Paired it with my iphone no problem. Previous owner was obviously using it as his phones are still in memory.
    As a suggestion, I think getting it flashed cost me $50 and 1 hour. If you have a dealership willing to do it (if you live in SoCal, try Allen Cadillac) I would suggest shelling out the cash. In that case, if you ever decide to sell, you don't need to tell the prospective buyer that it is linked to another car. Something like that may scare off some buyers. Just my opinion. I'm glad everything worked for you as well! Thanks again to everyone that's done this before us as it certainly made me LOVE my CTS!

  10. #160
    EdGrimley is offline Cadillac Owners Member
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    Re: 2008 Gen 7 to Gen 8 Onstar w/ Bluetooth Success

    Have just listed my Gen 8.0 module 25990227 on ebay. It has been working perfectly for me in my pre-Bluetooth 2008 CTS, but was able to acquire a 2010 gen 8.1 module so went with it and the gen 8.0 became surplus. Listed for $100 less than I paid: my loss = your gain.

  11. #161
    scoutpilot is offline Cadillac Owners Fanatic
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    Re: 2008 Gen 7 to Gen 8 Onstar w/ Bluetooth Success

    Dibs. Ed, I want it. I'll pay for it right now. Help a brother out.

  12. #162
    EdGrimley is offline Cadillac Owners Member
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    Re: 2008 Gen 7 to Gen 8 Onstar w/ Bluetooth Success

    Scoutpilot, don't know why it's not showing up - probably being indexed right now, but look for item number 110526835893 - it's there.

    (This board won't let me reply direct or post the link)

  13. #163
    scoutpilot is offline Cadillac Owners Fanatic
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    Re: 2008 Gen 7 to Gen 8 Onstar w/ Bluetooth Success

    Quote Originally Posted by EdGrimley View Post
    Scoutpilot, don't know why it's not showing up - probably being indexed right now, but look for item number 110526835893 - it's there.

    (This board won't let me reply direct or post the link)
    PM me with a buy-it-now price, please.

  14. #164
    C "T" ess's Avatar
    C "T" ess is offline Cadillac Owners Connoisseur
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    Re: 2008 Gen 7 to Gen 8 Onstar w/ Bluetooth Success

    Quote Originally Posted by EdGrimley View Post
    Have just listed my Gen 8.0 module 25990227 on ebay. It has been working perfectly for me in my pre-Bluetooth 2008 CTS, but was able to acquire a 2010 gen 8.1 module so went with it and the gen 8.0 became surplus. Listed for $100 less than I paid: my loss = your gain.
    I thought the location of the On* module changed and is now located above the glove box. I thought that would have made them incompatible with pre-my2009 cars.

  15. #165
    Gramzster is offline Cadillac Owners Fanatic
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    Re: 2008 Gen 7 to Gen 8 Onstar w/ Bluetooth Success

    Quote Originally Posted by C "T" ess View Post
    I thought the location of the On* module changed and is now located above the glove box. I thought that would have made them incompatible with pre-my2009 cars.
    They moved the module in 2009s, but the module remained the same.

    As Ewill3rd mentioned, he believes the module was moved for better bluetooth reception.

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