need to reprogram 556L
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=65016
Printed Date: May 06, 2025 at 11:09 AM
Topic: need to reprogram 556L
Posted By: Moosetooth
Subject: need to reprogram 556L
Date Posted: October 25, 2005 at 10:41 PM
I had my Boa 265b working ...(except for the parking lights). In trying to fix the parking lights I erased the programming for the passlock 2 module (556L). Unplugged all the fuses and tried to re-program the module but doesn't seem to want to re-learn. I know all the wiring is right, as I said it worked until I goofed it up. 99 S10 Blazer. The wiring data from the manufacturer listed 2 parking light wires, one + and one-. I had the parking lead from the remote starter wired to the negative one. The instructions were vague but it said a negative trigger were what was wanted. BTW my online support seems to have expired so any help I get here will be much appreciated. Thanks in advance.
Replies:
Posted By: mo12v
Date Posted: October 25, 2005 at 11:04 PM
TRy: https://www.directechs.com/guides/manuals/ig/accessories/N556L_05-05.pdf ------------- MO
Don't Learn from Others Mistakes
You Might Be the One That Knows.
Posted By: extreme1
Date Posted: October 25, 2005 at 11:22 PM
key on off on off start the truck, LED on 556L will blink 2 times, then after 5-10 seconds it blink again, you are done.
-------------
Shaughn Murley
Install Manager, Dealer Services
Visions Electronics
Red Deer, Alberta
Posted By: Moosetooth
Date Posted: October 26, 2005 at 1:52 AM
Well, I unplugged the 12v to module (I think that erases the memory, right?), key on, key off key on, start..... nothing happens. BTW, the security light stays on after I start it with the key. I guess that confirms that the 556L isn't doing everything it should. Seems to run OK starting it with the key though.
Posted By: Moosetooth
Date Posted: October 26, 2005 at 1:54 AM
Just read my post. Key on and OFF twice, THEN start is what I meant to write.
Posted By: Moosetooth
Date Posted: October 26, 2005 at 3:56 AM
OK, looking at my situation again, since it starts and runs with the key alright maybe the problem isn't the 556L but the remote starter itself. I thought it was the bypass module because the led didn't flash when I tried to re-program it. If I pull the fuses does that clear the memory in the remote starter? When I try to make the transmitter re-learn (after removing and re-inserting the battery) nothing happens. Here's some more weirdness... when I turn the engine off and close the door the courtesy lights stay on a minute. When the lights turn off my fuel guage creeps up to half full. When I open the door it drops back to empty.
Posted By: extreme1
Date Posted: October 26, 2005 at 8:51 AM
Moosetooth wrote:
OK, looking at my situation again, since it starts and runs with the key alright maybe the problem isn't the 556L but the remote starter itself. I thought it was the bypass module because the led didn't flash when I tried to re-program it. If I pull the fuses does that clear the memory in the remote starter? When I try to make the transmitter re-learn (after removing and re-inserting the battery) nothing happens.
Here's some more weirdness... when I turn the engine off and close the door the courtesy lights stay on a minute. When the lights turn off my fuel guage creeps up to half full. When I open the door it drops back to empty.
???????????????????????????????
You have something not wired right
I've never seen that happen before.
first thing I would do is remove the black wire from the 556L off the vehicles ORANGE / black and find a good solid ground for it.
------------- Shaughn Murley
Install Manager, Dealer Services
Visions Electronics
Red Deer, Alberta
Posted By: kgerry
Date Posted: October 26, 2005 at 9:08 AM
my friend i recommend you stop now and take it to a professional before you do serious damage to your vehicle..... i am not aware that the 555L loses programming if power is disconnected....if it did, i'm sure at least one or two of the hundred + i've installed would have come back by now because the customer disconnected his battery.....
-------------
Kevin Gerry
Certified Electronics Technician
MECP First Class Installer
Owner/Installer
Classic Car Audio
since 1979
Posted By: Moosetooth
Date Posted: October 26, 2005 at 7:59 PM
Thanks for the suggestions. I found I didn't have the status monitor wire connected properly. 556L re-programs fine now. Back to looking for the right parking light wire.....
Posted By: Moosetooth
Date Posted: November 04, 2005 at 9:05 PM
Thanks everyone. . It might help someone else to know that I found out that, at least with my vehicle, how quickly I turn the key off and on is crucial to getting the module to program itself.
Posted By: gus1
Date Posted: November 05, 2005 at 12:13 PM
Kevin.... the 556L loses it's mind when power is removed. You can also easily change modes by flipping the key on and off too many times in succession. Overall, I am not too impressed by this piece. For newer GMs I believe I will stick to the 2 relays/resistance method. 555L is a super solid piece (and would have been better in this application), the 556L tries to do too many things.
Oh well.... too old fashioned I guess.
Gus
PS: 556H will work on 2005+ Hondas with remote keys....
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Wherever I go, that is where I end up......
Posted By: kgerry
Date Posted: November 05, 2005 at 1:38 PM
huh... guess i've just been lucky then cause i've never had one come back that needed to be reprogrammed (555L i mean)... and i've been using that piece for about 4 years now..... havent used the 556L yet although i have them in stock now i use the GMBP or the 457G or XK01....... ------------- Kevin Gerry
Certified Electronics Technician
MECP First Class Installer
Owner/Installer
Classic Car Audio
since 1979
Posted By: JWorm
Date Posted: November 05, 2005 at 1:46 PM
kgerry wrote:
huh... guess i've just been lucky then cause i've never had one come back that needed to be reprogrammed... and i've been using that piece for about 4 years now.....
now i use the GMBP or the 457G or XK01.......
The 556L is being discussed here....it just came out this year. I think you are referring to the 555L.
Posted By: kgerry
Date Posted: November 05, 2005 at 2:16 PM
hey i'm a little slow on the uptake..... lol i just think of a 556L as a renumbered version of the 555L.... i wasnt aware they made any substantial software changes to this piece.... and it's theoretically so obsolete now it shouldnt be an issue anyway... i mean, who cuts passlock wires anymore?
-------------
Kevin Gerry
Certified Electronics Technician
MECP First Class Installer
Owner/Installer
Classic Car Audio
since 1979
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