’06 Chevy Silverado Service 4wd message
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=76221
Printed Date: April 28, 2024 at 9:36 AM
Topic: ’06 Chevy Silverado Service 4wd message
Posted By: apexer
Subject: ’06 Chevy Silverado Service 4wd message
Date Posted: April 14, 2006 at 7:46 AM
I have an Audiovox APS685 remote start/keyless entry system installed in a '06 Chevy Silverado. (Previously in a '03 Silverado). Since the unit was installed, when I remote start the vehicle, the "Service 4wd" message appears on the message center of the truck. (It only appears when remote starting) What should be checked to correct the problem? Along with the Audiovox unit, the other modules used are a DEI 555L (for Passlock?) and a Directed Electronics 456G data bus. Another issue is that the vehicle is a 4 -door crew and currently can open the driver's door with one press of the "unlock" button, and it takes 2 more presses (not one more as it should) to unlock the remaining doors. Is this a matter of not having the correct data bus? Is this in any way related to the Service 4wd message?
Replies:
Posted By: cntrylvr79
Date Posted: April 14, 2006 at 7:51 AM
there should be a white wire at the igniton make sure you're powering that up as an igniton wire. THat should take care of the 4wd message.
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Cause I'm So white and nerdy...
First Class Certi-fried installer
Posted By: NowYaKnow
Date Posted: April 15, 2006 at 12:07 AM
If the white wire doesn't do it, the brown 2nd accessory should definately take care of it. Usually you don't need to fire it up, but in some cases you do.
Mike
Posted By: apexer
Date Posted: April 17, 2006 at 12:25 PM
The installer swapped out the 456G data bus with a 457G-still had the mesage come on. He said something about having changing the 2nd & 3rd ignition wires(?) and this cured the problem with the message. Another thing-once I remote start the truck, turn the key to the "ON" postion, tap the brake pedal, the dome light comes on momentarily-if I do not wait until the light goes off, the "door ajar" message come on. Is this correct for this to happen? If I I wait for the light to dim, all is okay. Now for another question-since he put in the 457, he states that we cannot program the door locks for a 1 press driver's door, 2 press for the remaining doors-can only have one press to unlock ALL doors. Anyone know if that is true when using a DEI 457G with the Audiovox APS685??
Posted By: cntrylvr79
Date Posted: April 17, 2006 at 10:02 PM
Yes those issues with the 457 are normal conditions. If you want the 2 step ubnlock you'd have to use a 456g for the locks and a 555l for the paslock bypass.
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Cause I'm So white and nerdy...
First Class Certi-fried installer
Posted By: apexer
Date Posted: April 18, 2006 at 6:24 AM
Cntrylvr79-what is the difference between the 456g & 457? Is there any advantages by using the 457? The system originally had the 456 and I sort of had 2-step unlock, just that after unlocking the driver's door, I needed to press the unlock button 2 more times to unlock remaining doors. One place I checked mentioned the Bypass Kit brand module would give me the 2-step unlock, not sure if it will do that with this Audiovox system?
Posted By: Chris Luongo
Date Posted: April 18, 2006 at 7:55 AM
--The domelight briefly coming on is a design flaw of the 457G.
--What is the advantage of the 457G?
the 457 bypasses the PASSLock II for the remote start, AND operates the truck's doorlocks on the databus.
The 555L is Passlock only; the 456G is doorlocks only, requiring that two additional products be installed to get the job done.......the 457 allows for both things at once........resulting in a faster, cleaner install, and reduced cost.
But, the 457G has several shortcomings, including not turning on the domelight with unlock, and no two-step unlock.
--As far as your two-step unlock before, when the 456G was installed along with the Audiovox remote start......
The Audiovox 685 has TWO unlock output wires......one makes a pulse the first time you press unlock, and the other one makes a pulse on the second press.
It sounds like your installer connected only the first-unlock ouput from the 685 to the 456.
To correct that, the installer has two solutions:
A, connect BOTH the Audiovox's first- and second-unlock outputs to the 456, or
B, go into the Audiovox's programming menu, and turn the second-unlock feature off.
Posted By: apexer
Date Posted: April 18, 2006 at 9:50 AM
Thanks for the info!! I appreciate all of the help from all who has responded to my questions!!
Posted By: apexer
Date Posted: April 18, 2006 at 6:12 PM
Chris, I PM'd you to ask for a little clarification on the 2 solutions. I checked that when I unlock the doors with the remote, the dome light does come on in the truck. Will contact the installer to see if we can go back to the 456 & 555 as I would like to have the 2-step unlock seeing there are 4 doors. (
Posted By: floaterr
Date Posted: April 19, 2006 at 9:58 PM
Just wondering....
I notice on my 05 Avalanche the "door ajar" warning only comes on if I step on the brake and shift the tranny into reverse/drive immediately. If I hit the brake and then pause a second (or put on my seat belt) the warning never occurs. Kinda like the tranny takes over the databus and the alarm info is rejected. I think it's been mentioned in here that when hitting the brake (shutting down the remote start) the box sends out the door open then door closed commands to kill the RAP circuits, it seems like it doesn't wait for the databus to be free and instead just sends the burst of data..
Some explain to me though why the heck the headlights flash (at night)??
Posted By: apexer
Date Posted: April 20, 2006 at 6:17 AM
Floaterr, are you using a DEI 457G? What you describe about the "door ajar" is exactly what happens in my Silverado with the 457G. I don't care for it, and don't understand why it needs to happen. Headlight flash? Do they actually flash or more of a "flicker"? Checked with my installer on going back to the original set-up and he states DEI recommends not using the 555L/456 combo in my '06, but to use the 457G. Anyone know if GM(Chevrolet) changed anything at all that would make one want to use the 457 over the previous components other than a simpler install?
Posted By: Chris Luongo
Date Posted: April 20, 2006 at 7:10 AM
floater,
1. You'll only get the "door-ajar" message if a door is open AND the transmission is in gear.
For reasons unknown, the databus module only sends out a door-open signal for a moment, after you hit the brake.....as long as the transmission is in park during that time, you won't get the message or the chime......so that's why it only happens if you put it quickly into reverse.
2. As for the headlights flashing. Does the remote starter flash the parking lights on and off during the daytime?
The factory design is that the headlights come on automatically at night.......unless the parking lights are switched on. Since the remote starter keeps turning the parking lights on and off, that is why the headlights are flashing.
I don't like flashing parking lights with remote start anyway. Have your installer re-program the unit to keep the parking lights on steady, and the problem of the headlights flashing will go away.
apexer,
No reason from your point of view to not have the 555L and 456G installed in your truck. I think the two different pieces make the installation overly complex and costly, but they work just fine.
From the installer's point of view:
1. The 457 costs him less than the other two parts.
2. He's sick of working on it and wants you to go away.
3. I don't believe the 456G is in production anymore. He might have already installed your old 456 in someone else's car, or shipped it back to DEI, and doesn't have another.
At any rate, though, you deserve customer satisfaction and to get what you paid for. If you were a customer where I work, I'd try to make you happy no matter what features we'd agreed on beforehand.
the Trilogix (www.bypasskit.com) GM-DLBP does the same thing as the DEI 457G, but without the design flaws. It doesn't cause the door-ajar message, and it is capable of two-step unlocking, as well as having a Panic feature.
Its only downside is that it has to be re-programmed if it loses power---when the battery is replaced or after you need a jump start.
So, there's another option to consider.
Also, ask your installer: "If the 456G and 555L are not recommended, why did you install them in the first place?"
Posted By: apexer
Date Posted: April 20, 2006 at 8:06 AM
If I remote start my truck, get in (close door) and turn the key to the run postion and put it in gear before teh dome light dims, it will display the "door ajar" message even though the door is closed completely. Does the 456G module have the necessary 2 inputs for the 2-step unlock? Has anyone installed the Audiovox APS685 in a late model Silverado using the 2-step unlock? I do get the feeling that the installer is sick of working on it and wants me to go away. The 555L & 456G were from the previous vehicle and were put in the '06. Only issues when these 2 components were installed were the "Service 4wd" message-which seems to have been an error on the installer's part and the the 2-step unlock didn't function correctly as stated above-1 press driver's unlocked, 2 more presses for the remaining 3 doors.
Posted By: cntrylvr79
Date Posted: April 20, 2006 at 1:36 PM
the issues you had with the 555l/456 combo were install related problems. Have put this combo in quite a few 06 gm suvs/trucks haven't had one problem with them.
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Cause I'm So white and nerdy...
First Class Certi-fried installer
Posted By: apexer
Date Posted: April 20, 2006 at 2:34 PM
Were you able to set up the 2-step unlock feature(1 press driver's door, 2nd press-remaining doors)?
Posted By: cntrylvr79
Date Posted: April 20, 2006 at 3:45 PM
Answer sent via pm. The only thing I forgot is you might have to put diodes on the 2 unlock wires from the audiovox.
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Cause I'm So white and nerdy...
First Class Certi-fried installer
Posted By: Chris Luongo
Date Posted: April 20, 2006 at 3:57 PM
--The 456G (and the GM-DLBP for that matter) does not actually have two different unlock wires------it has one wire------the first pulse to the wire unlocks the driver's door only; pulsing it a second time unlocks the other door(s).
--I've been installing Audiovox product for four years now. The 685 is two model-cycles old now, but it is a fine piece.
--New or old Audiovox product, the two-step unlock works fine when installed properly, with the correct databus module.
--The service-4wd message was an install error, but had NOTHING to do with the doorlocks.
--The two-step unlock not working with the 456G was an install error, which could have been EASILY corrected with either of the methods I mentioned in my first post.
--You should point out to the installer that this new 457G did not solve your problem, and have him install the old pieces PROPERLY.
Posted By: apexer
Date Posted: April 21, 2006 at 11:23 AM
cntrylvr mentions the possibility for needing diodes on the 2 unlock wires from the Audiovox-will the installer know if this is needed or not for this particular vehicle? Thanks again for everyone's help with this!
Posted By: Chris Luongo
Date Posted: April 21, 2006 at 4:01 PM
I've never used diodes before, and I haven't had a problem.
Posted By: cntrylvr79
Date Posted: April 21, 2006 at 6:46 PM
If the installer doesn't know what a diode is they shouldn't be touching cars. The only reason I mention the diodes is becuase I had a problem once about a year ago with an alarm and the 456. But that was only once in about 100 or so gm trucks. ------------- Cause I'm So white and nerdy...
First Class Certi-fried installer
Posted By: p01110101
Date Posted: April 22, 2006 at 11:34 PM
the 06 trcuks use a new databus and require a new bypass interface. in my truck i use the compustar gm-all
Posted By: Chris Luongo
Date Posted: April 23, 2006 at 12:18 AM
p01110101 wrote:
the 06 trcuks use a new databus and require a new bypass interface. in my truck i use the compustar gm-all
I have seen no electrical difference in any of the 2003-2006 General Motors full-size trucks.
Posted By: apexer
Date Posted: April 23, 2006 at 7:14 AM
p01110101 wrote:
the 06 trcuks use a new databus and require a new bypass interface. in my truck i use the compustar gm-all
Why does it require a new bypass? Curious as I, too, am unaware of any changes since the 2003 in the Silverado trucks. Others have stated the same.
Posted By: cntrylvr79
Date Posted: April 23, 2006 at 6:53 PM
Me 3, I just did an 06 silverado today with the 555l/456g combo. Didn't have any problems with it. Makes about the 20th I've done. If there is something different then I guess I'm going to have a lot of calls to make soon. Not to mention a lot of those bypasses that allow the 2 step unlock to order.
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Cause I'm So white and nerdy...
First Class Certi-fried installer
Posted By: sparkie
Date Posted: April 23, 2006 at 7:26 PM
I think the member may be reffering to the 2007 GM trucks. They have completely changed. The 2006 trucks have not changed with regards to installing remote starters.
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sparky
Posted By: apexer
Date Posted: May 04, 2006 at 6:37 AM
So I stopped by the shop last week, spoke with the installer and mentioned what I had found out on this forum about using the original 555L/456G set-up and having 2-step unlocking. He says sure I can do that. (Why not do it the first time the truck was there, not the 4th?!) I took the truck over yesterday afternoon, was told it was a 1/2 hr. job-okay, fine. This was more like 1.5 to 2 hours. When he tells me it's all ready, I ask about it being set up for the 2-step unlock (one press opens the driver's door, second press unlocks the remaining 3 doors) and he says No, it is like before-1 press for the driver's door, 2 MORE presses of the unlock key to unlock the others. He claims it is due to the Audiovox unit, and that is why it can't do the 2-step unlock. I mentioned again what was stated in this thread, and even had a copy of the posts that told how to go about wiring the components but he didn't even look at it. At this point I would have went to his supervisor but he had left about 1/2 hour prior. Now what?
Posted By: Chris Luongo
Date Posted: May 04, 2006 at 7:20 AM
The only extent that it has something to do with the Audiovox remote starter, is that he is unwilling or unable to read the instructions that come with the unit, or the instructions we have provided here.
Since it seems unlikely he will get the job done, perhaps you just reprogram the thing yourself.......I think it would work by that method, as opposed to changing the wiring.
Can you access the programming button for the remote starter? That is the black pushbutton one, NOT the toggle switch that flips back and forth.
There are two convenient holes under the dash, and I mount my programming switch in one of those since it's already there........but other commonsense locations might be zip-tied inside the fuse box, tucked under the leading edge of the carpeting, zip-tied to one of the exisiting wire harnesses under the dash, or even drilled into the kick panel.
Next, do you have the installation manual that came with the remote starter originally? Not the owner's manual----they are two separate items.
If you don't have the installation manual, you can download it at audiovox.com. When you're searching their website, don't use hyphens.......just type in "aps685" or whatever the unit is that you have.
Anyway, once you've found the programming switch and have the installation manual..........
Near the back of the manual, is a list of all the settings you can change. There are several steps you must follow........involving the ignition key, the programming button, and buttons on the remote. The instructions are a little painful to read, but accurate.
So, go into programming, and turn the "2nd unlock" feature, or whatever they call it, OFF. See if that fixes it.
Posted By: apexer
Date Posted: May 06, 2006 at 3:21 PM
I have access to the programming button, and have printed off a copy of the install/programming instructions. By turning "Off" the 2-step unlock feature, will this possibly let me have the 2-step unlock, rather than what it is currently? If I turn the feature off and nothing changes, should/could I just leave set like that or should I turn it back on if no change?
Posted By: Chris Luongo
Date Posted: May 08, 2006 at 5:53 PM
Based on what you've told me about how the truck is behaving, I don't see any reason it shouldn't work.
Even if it doesn't work, for some reason, I can't see any harm in leaving it programmed off.
Here is what is happening, if you are curious:
--The Audiovox unit has three doorlock outputs: Lock, Unlock, and 2nd unlock. (red, green, & RED / black.)
--The red wire makes a pulse EVERY time you hit Lock, no matter what you did previously.
--When you press UNLOCK for the first time, the green wire makes a pulse..........when you press it a second time, the RED / black makes a pulse.
--From what you are describing, the installer has connected the green (1st unlock) to the DEI doorlock piece....but has left the RED / black (2nd unlock) connected to nothing.
--So, 1/2 of your "unlock" presses are going to trigger the RED / black, which does nothing.......
--By turning off the "2nd unlock" feature, the RED / black should no longer have any function, but the green will ALWAYS make a pulse, EVERY time you press unlock.
TIP: The programming instructions tell you to count how many times the parking lights flash. Unless you do this at night, you'll hardly be able to see the parking lights.
Instead, simply listen closely for the clicking sound of the remote starter turning the lights on and off.
Alternately, the display for the radio should go dim when the parking lights are on---you can just watch for that.
Posted By: cntrylvr79
Date Posted: May 08, 2006 at 7:31 PM
If the SEcond unlock feature is turned off then you won't have anyway to get drivers priorirt unlocking. Have to make sure the second unlock wire of the audiovox is hooked up to the greenblack wire of the 456. If it is then first try reprogramming the 456. Unplug the harness to the 456 then disconnect the blue wire of the harness and ground it. Then plug the harness back into the 456 the door locks should cycle twice. at the point hook the blue wire back up to what it was hooked up to before. Then test the locks and it should be all good.
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Cause I'm So white and nerdy...
First Class Certi-fried installer
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