TRW Keyless Entry module

[Pontiac6KSTEAWD]

Sorry for digging up a old topic.. Am I understanding correctly that if the grounding terminal is in the trunk, than the car has RKE?

Also, my power locks dont seem to be working at all, is there a place I should start on this.

I might have owned a W previously, but that was a long time ago....

[digitaloutsider]

Yeah, if there is a lead hanging back by the antenna or somewhere in that general area, the car should have RKE.

Non-working locks could be something as basic as a fuse, so I'd just start there.

[Nwebb2012]

3 hours ago, digitaloutsider said:

Yeah, if there is a lead hanging back by the antenna or somewhere in that general area, the car should have RKE.

Non-working locks could be something as basic as a fuse, so I'd just start there.

Where is the fuse located because my power looks work on my 92 GTP but can’t get it to go into programming mode and it has the correct RPO code. 

[digitaloutsider]

If the locks work, it's not the fuse. If it won't go into programming mode when you ground the lead in the trunk, the box itself is screwed and needs to be resoldered. 

[Nwebb2012]

34 minutes ago, digitaloutsider said:

If the locks work, it's not the fuse. If it won't go into programming mode when you ground the lead in the trunk, the box itself is screwed and needs to be resoldered. 

Awesome I appreciate it. Now to find someone to fix it cause I can’t solder to save my life. 

[digitaloutsider]

The solder points on the box aren't small or intricate or anything, you could definitely do it yourself with a low cost iron. Good learning project.

[Pontiac6KSTEAWD]

Pulled the power lock fuse out, and all the interior light went out, put the fuse back in, and the locks started working.. WTF?

Went and ground the wire in the trunk, and nothing... Well I guess I wont be fixing that.. But I do have power locks!

[dougg3]

20 hours ago, digitaloutsider said:

The solder points on the box aren't small or intricate or anything, you could definitely do it yourself with a low cost iron. Good learning project.

I just wanted to second this. Earlier in this thread I said my keyless entry module was acting erratically in programming mode. I resoldered all the solder joints on both boards in the module and now it works great, both in my vehicle and on my test bench. The only annoying part is the conformal coating. It makes the iron want to slip off the solder joints. But you can still resolder through it without going through the trouble of trying to remove the coating. Just have to be careful as you're holding the iron.

If the module is acting up I would definitely recommend trying this. Add a little bit of new fresh solder to each joint as you do it.

[Marshall]

On 12/12/2019 at 7:19 PM, Quaraxkad said:

1994 gmc Jimmy 4 door  key fob reprogram 

 

[Marshall]

Reprogram  key fob 1994 gmc Jimmy 

[Jeffery L]

On 12/12/2019 at 6:27 PM, ron350 said:

Does your TRW module box have a part # on it?

What is the location of this REMOTE KEYLESS ENTRY CONTROL MODULE  10063538 OEM for a 1994 Oldsmobile Cutlass Supreme & is this even the correct part#? I've been told in the trunk, back seat right side & under the dash for this part.  

[Quaraxkad]

6 hours ago, Jeffery L said:

What is the location of this REMOTE KEYLESS ENTRY CONTROL MODULE  10063538 OEM for a 1994 Oldsmobile Cutlass Supreme & is this even the correct part#? I've been told in the trunk, back seat right side & under the dash for this part.  

If it's the same as the 92, it's behind the rear passenger seat, under the trim panel.

[bluecalais79]

I just did this job and I relocated the module in the trunk. It's now velcroed on the inner fenderwell. There is plenty of wiring and the module can be hidden under the trunk carpet. Now when the next time it fails it will be a 10 minute job instead of a real headache

[mdpierce8]

Sorry to dig this topic up but I’m currently doing this job off and on on my 1991 Grand Prix. I have unbolted and taken out the back seat completely but haven’t found the module yet. Are they located in the same place on a 91 Grand Prix?

[Black92GS]

Is it a coupe? In my Regal, it’s behind the passenger side rear interior panel. I believe all of the 1st gen coupes, save for the convertibles have them in a similar location. 
 

It’s roughly behind the red circle. 

[94 olds vert]

I could be wrong this was a long time ago. In my 1991 Grand prix my keyless entry did not work at all. Figured out the relay was getting power but not doing anything. If I recall it is under the rear package tray? I remember getting in the trunk at one point, but that could have been my convertible. 

I did also remove my rear interior panels, but can't remember if it was for the keyless entry module. 

Once you find it, just open it up and look for bad solder joints and touch them up. That's how I fixed mine. 

[mdpierce8]

Appreciate the response. I’ll see what I can do this weekend.

[55trucker]

In the GP it's mounted to the topside of the right rear parcel shelf next to the speaker.

[GnatGoSplat]

On 4/12/2025 at 7:52 AM, 55trucker said:

In the GP it's mounted to the topside of the right rear parcel shelf next to the speaker.

Same place as the Cutlass coupes.  Looks like Regal is an oddball.  Maybe because the Regal rear glass is a lot more vertical so the parcel shelf is a lot smaller.

 

[primergray]

On 4/11/2025 at 3:55 PM, Black92GS said:

Is it a coupe? In my Regal, it’s behind the passenger side rear interior panel. I believe all of the 1st gen coupes, save for the convertibles have them in a similar location. 
 

It’s roughly behind the red circle. 

Ohhh...glad I've been procrastinating that task since I thought I'd have to pull the top of the back seat to get under the tray...

[55trucker]

2 hours ago, GnatGoSplat said:

Same place as the Cutlass coupes.  Looks like Regal is an oddball.  Maybe because the Regal rear glass is a lot more vertical so the parcel shelf is a lot smaller.

 

I don't really believe that location is quite the best, the parcel shelf stamping does vibrate to a degree if one is continually using ones sound system to an aggressive level, the printed board is susceptible to vibration.

[GnatGoSplat]

You're probably right.  Also the door lock wiring had to be extended to reach all the way back there when up front would have been a lot closer.  Perhaps their thinking was it's high up, not blocked by any metal, and when people park their cars they usually park head-in and approach towards the rear, so that parcel shelf might be the best place for range.  On the GMT800 pickups and SUVs which are several years newer, they put the module up high towards the middle of the dash, just below the dash cover.

[Black92GS]

50 minutes ago, primergray said:

Ohhh...glad I've been procrastinating that task since I thought I'd have to pull the top of the back seat to get under the tray...

Nope….a couple screws, pull a couple interior pieces and it’s right there. I figured all the coupes would be similar, but you know….. GM. 
 

I had tried fixing mine last summer, but I really needed a better soldering iron. I had managed to get it working for a bit though. I traced it back to a bad solder joint on one of the pins where the vehicle side wiring harness plugs in. I could wiggle the connector slightly and get it working. I’ve since gotten better soldering equipment, redid those connections over the weekend….and now it’s back to not working at all.

I’m sort of apprehensive to try again though, as the driver side power door lock actuator goes through the RKE module, even when using the door switches. If I screw something up…I don’t want to lose my power locks altogether. Since it’s not a daily, I’ll likely leave well enough alone for now. 

[White93z34]

Wow, what are the odds of this coming up again.

I just redid a couple of these modules. At one point It got bad enough that I built a test jig for them, really made testing them that much easier.

Had no idea the regal ones were there, seems like an odd location. I assumed they were all in the rear parcel shelf.