aftermarket key fob ?

aftermarket key fob ?

Postby markmitch [OP] » January 4th 2021, 4:45am

Anyone here ever install a key fob system on a vehicle that didn't have one? My 03 Astro has power door locks and power windows but did not come with a key fob system. Even if I have to install a remote start system to get it I would. So if you have ever done either let me know what you did and brands used etc? Thanks , Mark
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Re: aftermarket key fob ?

Postby MechBob » January 4th 2021, 6:06am

LOL,Mark,an 03 body controls are through the PCM.Buy the remote transmitters, then pay a shop that has the GM programming to set it up/turn it on.
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Re: aftermarket key fob ?

Postby doogaloo » January 4th 2021, 11:55am

Another option that I decided to do was buy an alarm with a key fob. When you start the van, it locks the doors and provides basic security. Purchased on Amazon for around $35. Used Velcro to attach.
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Re: aftermarket key fob ?

Postby dcsleeper » January 4th 2021, 2:45pm

MechBob wrote:LOL,Mark,an 03 body controls are through the PCM.Buy the remote transmitters, then pay a shop that has the GM programming to set it up/turn it on.

Can you expand on this?
What exactly does the GM dealer or locksmith 'do' to enable this?
If there is a general purpose thing that I could use for other purposes I would just spend that money on hardware and not services.

Mark, the fobs are $11 for two on ebay.
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Re: aftermarket key fob ?

Postby AstroWill » January 4th 2021, 5:43pm

Firstly, post a picture of your RPO codes, see what the van came with. You can also try to enter programming mode and see if it reacts at all with programming mode. If that is the case then you just need the fobs. Otherwise you should be able to add in the RKE module and antenna and get everything programmed.

The RKE module talks directly to the BCM to send lock/unlock/programming/etc.

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Re: aftermarket key fob ?

Postby markmitch [OP] » January 4th 2021, 6:15pm

rpo codes 03 Astro
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Re: aftermarket key fob ?

Postby dcsleeper » January 4th 2021, 6:26pm

<<< Firstly, post a picture of your RPO codes, see what the van came with. You can also try to enter programming mode and see if it reacts at all with programming mode. If that is the case then you just need the fobs.
>>>

I did all this but it didn't work. That's why I ask about the 'programmer'.
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Re: aftermarket key fob ?

Postby AstroWill » January 4th 2021, 6:27pm

AU0 code is for RKE, so you just need the fobs. Go out to your van and try entering programming mode see if the locks react.
Simple to program: https://sites.google.com/site/astrosafa ... less-entry

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Re: aftermarket key fob ?

Postby AstroWill » January 4th 2021, 6:33pm

dcsleeper wrote:<<< Firstly, post a picture of your RPO codes, see what the van came with. You can also try to enter programming mode and see if it reacts at all with programming mode. If that is the case then you just need the fobs.
>>>

I did all this but it didn't work. That's why I ask about the 'programmer'.

Have you verified that the RKE module is there and has power?

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Re: aftermarket key fob ?

Postby dcsleeper » January 4th 2021, 6:34pm

I have that rpo
programming mode responds, but never works.
seller said needs a locksmith
mechbob says programmer

WHAT programmer will work for this?

I'm sure it would come in handy for something else as well. Might as well get it.

AstroWill wrote:Have you verified that the RKE module is there and has power?


wouldn't it responding by entering programming mode prove that the rke module has power?
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Re: aftermarket key fob ?

Postby markmitch [OP] » January 4th 2021, 7:02pm

so what exactly would I need to do this? and would an aftermarket remote starter be wired into this or would it be separate?
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Re: aftermarket key fob ?

Postby AstroWill » January 4th 2021, 7:08pm

markmitch wrote:so what exactly would I need to do this? and would an aftermarket remote starter be wired into this or would it be separate?

Just buy the proper keyfobs and follow the instructions to program them. A remote starter would be a separate aftermarket item. If you are going that route then you wouldn't bother with the OEM fobs.


dcsleeper wrote:I have that rpo
programming mode responds, but never works.
seller said needs a locksmith
mechbob says programmer

The Tech2 can put it into programming mode, but it does the same thing. If that is working then you might not have the proper keyfobs.

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