Remote Start AP8 Questions/Issues. Lights flash but won’t turn over.

[liftedhoe07]

Hello everyone! Long time reader, first time poster. I have scoured the forums for these question and cannot seem to find them. Any advice or answers would be greatly appreciated. Thank you!!

I own an 07 NBS Tahoe with RPO code AP8 for ‘remote start ready.’ From the extensive research I have done I am under the impression remote start ready requires no addition antennas, wiring, signals, etc. To achieve factory remote start I need to:
1) Purchase fob with activation code for GM to enable remote start
2) Take fob to dealer and have them instal/activate the fob for remote start
After completing these steps, remote start will be activated and good to go. Please correct me if I am wrong.

If the above information is correct (which I believe it is based upon other forums), that leads me to my current issue. I purchased a Fob (one single fob) from 1A Auto for $163.24 and confirmed with them it contained the code GM needed to active. Unfortunately this was the only suppler I could find. Companies like GM part direct have discounted the fobs from their sites.

Anyways, The fob arrived, I programmed the fob through the DIC. Stood about 10 feet from the truck and Hit lock, then R/S and the lights flashed but it didn’t turn over. My initial though was “ok, signal revived but I still need to go to the dealer for remote start programming.” (I’m not sure if the matters but when I programmed the new fob, the old fob stopped working). I went to the dealer a few days later with the key fob and activation code, after about two hours they essentially came up with the same result I did. The truck received the signal, the lights flash but it won’t initiate the turn over (both fobs worked this time). My next option is to drop it off and have them diagnose what the issue is. The dealer is going to comp the initial two hour diagnostics but anything after I’ll be on the hook for, not including whatever parts it may cost to fix the issue. The question “is it worth it?” begins to come into play.

Does anyone have any idea what the issue could be? If my information about the AP8 is incorrect and more antennas, wiring, etc. need to be installed for it to work, then this issue would make sense. I am hoping my information is correct and this can be something I can fix at home. I would assume that the dealer already activated remote start at the shop so now I can try and self diagnose to save some cash.

Any information or advice would be greatly appreciated. Thank you in advance!

Note:
Battery is good, hood latch is reading closed, full tank of gas, no CEL lights, all doors are closed, pushing lock then holding the R/S button for 4 seconds. These are all issues I have read that could stop it from starting.

 

[915_Tahoe]

Your 07 has the AP8 option but you do need to purchase the remote start package, which includes the new fobs and activation. this must be done at the dealer, so they can connect to gm and turn on the remote start. once that is done you are good to go, other vehicles that dont have the ap8 require more to get it working.
if you can provide the last 8 of your vin#, i can get you the gm# for the part.

 

[liftedhoe07]

Your 07 has the AP8 option but you do need to purchase the remote start package, which includes the new fobs and activation. this must be done at the dealer, so they can connect to gm and turn on the remote start. once that is done you are good to go, other vehicles that dont have the ap8 require more to get it working.
if you can provide the last 8 of your vin#, i can get you the gm# for the part.

thank your for the response. Is the remote start package just the two fobs? Last 8 are
7R179414. I have had no luck finding the parts through truly authorized GM dealers. However, If it is I’ve already got that, and have had the dealer install and program. The issue now that I am trying to figure out is where the communication to remote start is getting lost

 

[915_Tahoe]

With the remote start package it comes with the activation code, that code is programmed to the vehicle to activate the ap8 option to read the fobs command.
Other trucks that don't have the ap8 require more parts and labor time to have it working.

Without that code it will not work and that's the only way to get the code, which is to get the package.

 

[liftedhoe07]

With the remote start package it comes with the activation code, that code is programmed to the vehicle to activate the ap8 option to read the fobs command.
Other trucks that don't have the ap8 require more parts and labor time to have it working.

Without that code it will not work and that's the only way to get the code, which is to get the package.

I appreciate your help but I don’t think you took the time to read my post. Thanks

 

[915_Tahoe]

This is the package you need. GM#19154444
Only problem, part is discontinued from GM. Best thing you can do i find the gm# on ebay/amazon and anywhere on the net. You should still be able to get it done at the delaer.

I did read your post, and by you just purchasing the fobs separate it will not work on your truck. unless you get the remote packge, which comes with fobs and the activation code. the option needs to be programmed to the unlock it. your truck is pre-wired for remote start.

 

[Wolfbraid]

Also if your lights flash, and you hear the fuel pump prime with no start, it Could mean you have a check engine(or pending check engine light)

 

[Doubeleive]

This is the package you need. GM#19154444
Only problem, part is discontinued from GM. Best thing you can do i find the gm# on ebay/amazon and anywhere on the net. You should still be able to get it done at the delaer.

I did read your post, and by you just purchasing the fobs separate it will not work on your truck. unless you get the remote packge, which comes with fobs and the activation code. the option needs to be programmed to the unlock it. your truck is pre-wired for remote start.

from what I read he did get the code, but doesn't sound like the code was programmed in unless the dealer did it?

 

[Big Mama]

Agreed. Need code programmed and while there make sure there are no hidden trouble codes.

 

[Da90]

Hello everyone! Long time reader, first time poster. I have scoured the forums for these question and cannot seem to find them. Any advice or answers would be greatly appreciated. Thank you!!

I own an 07 NBS Tahoe with RPO code AP8 for ‘remote start ready.’ From the extensive research I have done I am under the impression remote start ready requires no addition antennas, wiring, signals, etc. To achieve factory remote start I need to:
1) Purchase fob with activation code for GM to enable remote start
2) Take fob to dealer and have them instal/activate the fob for remote start
After completing these steps, remote start will be activated and good to go. Please correct me if I am wrong.

If the above information is correct (which I believe it is based upon other forums), that leads me to my current issue. I purchased a Fob (one single fob) from 1A Auto for $163.24 and confirmed with them it contained the code GM needed to active. Unfortunately this was the only suppler I could find. Companies like GM part direct have discounted the fobs from their sites.

Anyways, The fob arrived, I programmed the fob through the DIC. Stood about 10 feet from the truck and Hit lock, then R/S and the lights flashed but it didn’t turn over. My initial though was “ok, signal revived but I still need to go to the dealer for remote start programming.” (I’m not sure if the matters but when I programmed the new fob, the old fob stopped working). I went to the dealer a few days later with the key fob and activation code, after about two hours they essentially came up with the same result I did. The truck received the signal, the lights flash but it won’t initiate the turn over (both fobs worked this time). My next option is to drop it off and have them diagnose what the issue is. The dealer is going to comp the initial two hour diagnostics but anything after I’ll be on the hook for, not including whatever parts it may cost to fix the issue. The question “is it worth it?” begins to come into play.

Does anyone have any idea what the issue could be? If my information about the AP8 is incorrect and more antennas, wiring, etc. need to be installed for it to work, then this issue would make sense. I am hoping my information is correct and this can be something I can fix at home. I would assume that the dealer already activated remote start at the shop so now I can try and self diagnose to save some cash.

Any information or advice would be greatly appreciated. Thank you in advance!

Note:
Battery is good, hood latch is reading closed, full tank of gas, no CEL lights, all doors are closed, pushing lock then holding the R/S button for 4 seconds. These are all issues I have read that could stop it from starting.

That’s a good one.... In your note you pretty much touched on everything that I am aware of that could be the problem. Only thing I can be of any help with is when programming fobs you have to reprogram the old along with the new at the same time. During the learning process it erases the old fobs. Good luck!


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