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Replacement RCDLR problem

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Old Jul 5, 2025 | 10:09 AM
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Default Replacement RCDLR problem

Hi,
I’ve scoured the forum and haven’t found a solution to my problem.

I bought a base 2006 convertible with 19k miles back in April. No TP sensors operational and fobs won’t work remotely. I’ve been driving the car with a fob in the inductor.

I bought a used replacement RCDLR from C&S Corvettes and installed it yesterday.
I have a Tech 2 knock off. I did the 30 minute learn fobs procedure for the 2 fobs I have. When done the car did not recognize the fobs even in the inductor although I can turn on accessory mode and the ignition (no start)

When I go to module setup I get a no communication, module is locked message.
Pulling fuse 11 does not reset the module.

I tried putting my old RCDLR back in to make the car drivable again but now it does not recognize the fobs and I am unable to get it into learn mode as I’m getting a locked message as well.

The Tech 2 shows both RCDLRs present the old one with a status of 1 and the new with a status of 0.

Is there anyway to force the new ECU to learn the new RCDLR password?

im stumped and my car is bricked for now. I would welcome any ideas or suggestions.

Thank-you.
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Old Jul 5, 2025 | 12:54 PM
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If you might need help with this give me a shout…I’m right across the river...BTW, stay away from that "other place" you posted this...the expertise level over there is pretty "thin"...LOL !!



Last edited by C5 Diag; Jul 5, 2025 at 01:59 PM.
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Old Jul 5, 2025 | 01:12 PM
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Old Jul 5, 2025 | 03:08 PM
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Thank you for your reply. Those are the procedures I attempted to follow. I was able to do the 30 min fob relearn process for the two fobs I possess. I have not been able to start the theft deterrent relearn process.

I’m able to get the car into accessory mode and turn on the ignition with the new RCDLR but start is disabled. I’m kind of stumped as to what to do next.
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Old Jul 5, 2025 | 03:15 PM
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Well if you want me to come by say tomorrow let me know and we'll see what's going on.
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Old Jul 5, 2025 | 03:32 PM
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That would be fantastic. I’m really at a loss.
im in Fort Myers now. I’ll PM you my number and address.
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Old Jul 13, 2025 | 12:48 PM
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Default Problem solved

Many thanks to C5 Diag for his help in getting this sorted out. He brought his diagnostic equipment and was able to determine there were no issues with communication on the busses.

it turns out that both key fobs I received from the previous owner were bad and had no rf output. He told me when I bought the car that the RCDLR was bad so I bought a replacement but couldn’t get through the program procedure.

I ordered a new key fob, used the long procedure to program and still couldn’t get through the security code learning process using my TECH 2 in the set up RCDLR mode in the Body control section. I was finally able to do the 30 minute code reset in the RCDLR section of Vehicle Control Systems.

Learned the new TPMS sensors and now everything works perfectly.

Many thanks to C5Diag, I would still be struggling without his help.

Last edited by C5 Diag; Jul 13, 2025 at 01:33 PM.
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