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2004 Silverado I changed the battery I the keyless fob and…

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2004 Silverado I changed the...
2004 Silverado I changed the battery I the keyless fob and programed per instrutions on line it work fine but after letting truck sit a few minutes it wouldn't work , if you manually unlock the door it works for a few minutes and stops until you manually unlock it ??
Submitted: 2 years ago.Category: Chevy
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Answered in 5 minutes by:
1/20/2016
Chevy Mechanic: Reggie Whiddon,
 replied 2 years ago
Reggie Whiddon
Category: Chevy
Satisfied Customers: 167
Experience: Lead tech at river regions auto
Verified

Go back and reprogram again but before y ou do disconnect both battery cables and clamp together this will drain the memory of all modules. While cables are clamped together cycle your key through all positions then off then hook up positive first then reprogram again

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Customer reply replied 2 years ago
same as before
Customer reply replied 2 years ago
I've tried it twice no change
Chevy Mechanic: Reggie Whiddon,
 replied 2 years ago

You did this after grounding out the positive cable and still no change

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Customer reply replied 2 years ago
I disconnected the cables and clamped then together both times and no change.
Chevy Mechanic: Reggie Whiddon,
 replied 2 years ago

okay do you have access to a scan tool?

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Chevy Mechanic: Reggie Whiddon,
 replied 2 years ago

And one more question are you using only one key fob?

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Customer reply replied 2 years ago
only one fob, can have a scan tool tomorrow
Chevy Mechanic: Reggie Whiddon,
 replied 2 years ago

Okay the one fob is going to be one of your problems. Programming requires you to have two fobs.

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Customer reply replied 2 years ago
I picked up another fob disconnected the battery clamped cables together cycled the key reconnected the battery cables positive first reprogramed both fobs they worked for a few minutes then stopped until you manually unlock the door then they will work for a few minutes then stop.
Chevy Mechanic: Reggie Whiddon,
 replied 2 years ago

I have had cases where they had to be programmed using tech2, did you get the scan tool today?

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Customer reply replied 2 years ago
have scan tool
Chevy Mechanic: Reggie Whiddon,
 replied 2 years ago

what type do you have

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Chevy Mechanic: Reggie Whiddon,
 replied 2 years ago

We need to access the remote function actuation module, scan for codes and use the scan tool to learn fobs

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Customer reply replied 2 years ago
snap on modis
Chevy Mechanic: Reggie Whiddon,
 replied 2 years ago

I beleive with there latest software you should be able to do this go into body locate the RFA module check for codes or better yet do a total system scan and see what you got

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Customer reply replied 2 years ago
found 2 codes B2600,U1000
Chevy Mechanic: Reggie Whiddon,
 replied 2 years ago

B2600 is a problem with your drl but the u1000 that's our concern. Can u access rfa module

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Customer reply replied 2 years ago
just so were on the same page your talking the r/h door actuator?
Chevy Mechanic: Reggie Whiddon,
 replied 2 years ago

No sir the rfa module that is the module that runs your fobs and door locks

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Customer reply replied 2 years ago
Where might it be located
Chevy Mechanic: Reggie Whiddon,
 replied 2 years ago

It would be found under the Body section of your scan tool you should see it in menu

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Customer reply replied 2 years ago
scan tool does not list a RFA
Chevy Mechanic: Reggie Whiddon,
 replied 2 years ago

okay possibly that tool has it listed different, go through each body module and see if you find data for key fobs or learn procedure, its also possible that tool doesnt have the function.

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Customer reply replied 2 years ago
found fob data procedure shows fobs are programed
Chevy Mechanic: Reggie Whiddon,
 replied 2 years ago

Are you saying you got them programmed

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Customer reply replied 2 years ago
no same problem
Chevy Mechanic: Reggie Whiddon,
 replied 2 years ago

Oh I got you thr module data says there programmed, u should be able to unpair them with the functions menu on the scan tool.

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Customer reply replied 2 years ago
I'm not up on all the acronym's what is the thr module and after I unpair the flobs what then?
Customer reply replied 2 years ago
no more help, I didn't know there was a time limit, thanks anyway.
Chevy Mechanic: Reggie Whiddon,
 replied 2 years ago

Sir I apologize for the delay. And my bad spelling. What you want to do is unpair the fobs

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Chevy Mechanic: Reggie Whiddon,
 replied 2 years ago

I am not sure you can do that with your scantool thr rfa or remote function actuation module is where this is down

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Chevy Mechanic: Reggie Whiddon,
 replied 2 years ago

And there is no limit I'm hear to y ou get it fixed, please understand I am foreman of a very large shop sometimes may take a min before I get back to you

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Customer reply replied 2 years ago
I don't see anything about unpair in the this scan tool is there another way?
Chevy Mechanic: Reggie Whiddon,
 replied 2 years ago

The only thing you can do without a scantoil is the reboot procedure I taught you, in theory that erases any temporarily stored information on a module which would force it to learn new. However anything permanently written would stay and for that you need factory level access to program. Any chance on getting hold of a tech2 scantool

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Customer reply replied 2 years ago
No tech 2 is there anything else I can do ?
Chevy Mechanic: Reggie Whiddon,
 replied 2 years ago

Hi there good to hear back from you I actually thought of you yesterday I had an 08 suburban could not get fobs programed customer had lost keys I wound up replacing the module it was locked. And I hate telling you this but without factory level access to the body control module and the remote function actuation module with the ability to program through the software you have done far more than the average person could. I have a launch that I use that or a tech 2 is about the only ones I know of. If u take it to dealer yours may take new fobs. Or it may need module like mine

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