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Help needed with key fob issue

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Old Apr 23, 2023 | 02:13 PM
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Default Help needed with key fob issue

I have several C5’s, but my 1999 is having issues with the key fobs:

1. Both fobs lose sync after about 10 minutes, both have new batteries and don’t lose sync if I sync to my 1998.
2. When synced, both fobs will lock doors, but will not unlock doors or upon trunk lid
3. Both interior door lock buttons work fine for locking and unlocking
4. Trunk lid opens with dash button
5. Tpms works fine

What I’ve tried so far:
1. New battery in car
2. New batteries in both fobs
3. Went through learning process with both fobs through DIC process
4. Cleaned all grounding posts throughout car
5. Checked all fuses
6. Checked connections at wireless receiver in drivers quarter panel
7. Checked wiring in both a A pillars, connectors are fine.used liquid electrical tape at both connecters. (Wiggled harnesses when trying to unlock fob, no change)
8. Sent in BCM for repair. ( no change )
9. Scan tool originally had the following codes when I started:
- B2282, B2284, U1064, B2283, B2285, U1064, B0851.

I cleared the codes and so far they have not come back.

About the only thing I have not done is ldcm and rdcm.

Any help would be appreciated.

Thanks,
Mike


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Old Apr 24, 2023 | 06:21 PM
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From: Bugs Bunny should'a made a left turn here
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Did you try a new fob? Sometimes the internals of the fobs themselves can break
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Old Apr 25, 2023 | 05:05 PM
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I have not since the fobs work fine in my other C5 when I resync to that car. I ordered one today though and will try. Thanks!
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Old Apr 27, 2023 | 08:12 PM
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I bought a new fob, no difference….anyone have any other ideas?
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Old Apr 27, 2023 | 10:57 PM
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From: Bugs Bunny should'a made a left turn here
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convert to the -01 to -04 style? a bit of legwork but the newer system is vastly superior
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Old Apr 28, 2023 | 07:26 AM
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Is a kit available or do I need to find the parts separately?
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Old Apr 28, 2023 | 09:05 AM
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From: Bugs Bunny should'a made a left turn here
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Originally Posted by mallett396
Is a kit available or do I need to find the parts separately?
Check out all the details here:

https://www.corvetteforum.com/forums...01-04-wow.html

And more info here:

https://www.corvetteforum.com/forums...post1606525304

Let me know if you need help sourcing the materials should you decide to go this route. It's not super simple but worth it in the end
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Old Apr 28, 2023 | 09:24 AM
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From: Bugs Bunny should'a made a left turn here
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Originally Posted by jdmvette
Check out all the details here:

https://www.corvetteforum.com/forums...01-04-wow.html

And more info here:

https://www.corvetteforum.com/forums...post1606525304

Let me know if you need help sourcing the materials should you decide to go this route. It's not super simple but worth it in the end

Since the parts are hard to come by I found some that are currently available right now

TPMS receiver: https://www.ebay.com/itm/01-04-Corve...edirect=mobile

Wire conversion harness: https://www.ebay.com/itm/Keyless-Ent...edirect=mobile

TPMS sensor modules x4: https://www.ebay.com/itm/315-MHz-TPM...edirect=mobile

TPMS sensor activation tool:
Amazon Amazon

-01/-04 flip key fob if you want to go that route...like I did https://www.ebay.com/itm/A-KEY-STYLE...edirect=mobile

Regular key fobs if you don't: https://www.ebay.com/itm/2-For-2001-2002-2003-2004-Chevrolet-Corvette-C5-Car-Key-Fob-Remote-KOBLEAR1XT/354649502958?hash=item5292c1f4ee:gpQAA OSww49kEWuF&amdata=enc:AQAIAAAA0NdGZhVUm TQd3msJiLg+/q8k0x+TxuaraAMUcKNQqMXsAe7dLQqRI4DswFR9S O0j6pJgy5t/UT7x+Zz5IDu3r2bKxHl7TVyyx+afYfbhHBGza/L0ClN6xEeSIhh4gmbs6k/MtWkHime2TNXLegIlrC5EAT80uz2G7ttYWUUacK+ gk+wBX/mzWnuyNwzz0O8vWAxwzGbbKrTn5pSXflVVxck+g9 OOGYBh594nOe+zNV2opEgOqDb5EAxd4wdyBDu2Qk tA/FQaL8NcGZiJ7Xs17Cc=%7Ctkp:Bk9SR5zexID5YQ &pageci=606ecdca-7fae-473d-9a66-bee0c8d8f6c6&redirect=mobile
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Old Apr 28, 2023 | 11:49 AM
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THANK YOU…bought it all….
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Old Apr 28, 2023 | 12:13 PM
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From: Bugs Bunny should'a made a left turn here
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^ awesome! Those newer TPMS receivers aren't always available so the timing was perfect.
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