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So I have a 93 with the PKE. It was working fine before installing all new carpet kit. After, I notice a small box(see pictures below) was installed years ago in the center console when I got the car in 97' and the PKE always worked fine. I even added a new key fob and had no problems programming it. Since the install of the carpet at a local shop, that box was handed to me. And of course the PKE does not work. After some investigating, I think this small box may have been an aftermarket addition alarm or antenna of some sort. Problem, I cannot figure out if it was after market and if it was where do I plug it back in to see if it works. I have replaced the PKE module and I can get the program started to accept the key fob but it won't follow thru all the way with the programming. Anyone who has a 93'(convertible) can you verify if this is a standard piece(small box in center console) that came with the car or is it an after market piece?
Aftermarket for sure. Who ever took it out probably screwed up the wiring. Time to buy a service manual or take it to a Corvette shop or dealer. Throw the aftermarket box in the picture in the garbage.
Last edited by corvette95; Apr 8, 2020 at 07:33 PM.
Thanks for the response... I was thinning the same thing. I think I am the second owner; it was a originally order by a dealership in Illinois and served as a demo and showroom car where it sat most of the time. That what I was told, so I assumed maybe they did an aftermarket alarm. I took the dash completely off and tried to make sure all the factory wires were intact and not touched. So, when I saw this box when I first bought the car back in '97, it looked like it came with the car. It sat nice and convenient in the center console with no visible wires. After installing new interior, it wasn't put back and worse, I am not ever sure it was ever hooked up during the time I have had the car so I can verify it was ever integrated into the factory PKE system. Now, I have replaced both PKE modules and I can get halfway thru setting the car up into program mode, but when I turn the key off to bring the fobs in proximity, the 'security' light goes out. I also have the aftermarket 'lookalike' key fobs but they have worked in the past just fine until the new interior install. So, I am at a lost on what to do cuz the PKE system worked perfect and was a great option I used ALL the time when I drove the car. Frustrating!!!
So, did the PKE work before you did the interior? Have or did you cut or repair any wires? The suspect wires would be under the steering column area and hush panel. Are all the interior lights working, cigarette lighter, key chime? So the PKE Passive light will light up and go into programming mode but goes out when you do exactly what? Are you programming one a time? Do you have another key you can try? Also, the key wiggle test may come into play... I will send a PM.
Sorry for the late reply. So after doing some investigating and thinking, I pulled the chime module and tested it and it worked. While pulling codes I cycled thru the CCM outputs and everything worked. I put the chime and PKE module back in the car and focused on the ignition switch where the key goes into the steering column. NOW, for whatever reason, the chimes work as soon as I put the key in the ignition. So last night I tried to program the PKE again and got the light to flash including hearing the chimes the entire time. However, I went to get my key fob and introduce it to the system... I sat it on the dash it never recognized, after two minutes the PKE timed out. So I removed the battery in the fob and checked it by itself. Showed 3.10v, and then I put it back in the fob and checked the terminals. It also showed 3.10v across the negative and positive terminals. So now, I am wondering if its the antenna in the fob? I want to see if there is a way to check and see if the fob is actually putting out a signal.
And yes, the PKE worked before the install and engine rebuild.
Now, the car hardware itself is working fine I think. I pulled code H65, H72. H72 is because the radio is out now so I could access the chime and PKE module. I don't know if H65 pertains to the PKE. I have a code list but H65 shows different, not pertaining to the PKE. I made progress, now I don't want to put the dash back in and secure it only to find out I have to remove it again because I have a PKE receiver issue...
So last night after pulling the dash, I put back in my original PKE module 93' along with the chime module I tested for voltage. I also figured out I have a bad door pin on the passenger side. After clearing codes, and starting from scratch, I began the programming mode again, this time I brought the fob into the car and screwed the battery a little bit got the receiver to register and program. I noticed the chimes were going the entire time signaling the key was still in the ignition in the correct position for the PKE and CCM to recognize the key because the chimes were going off the entire time. The first several tries the chimes weren't going and the PKE light extinguished after flashing signaling to turn the key to off position and bring the key fob in range. This time, I made sure the chimes were working signaling the system recognized the key.
The bad is I need a new chime module and also a new door pin on the passenger side.
Thanks Chris for helping, hope this helps others too!
Last edited by Dillingham; Apr 17, 2020 at 12:24 AM.
So here I am now with more problems with this PKE system!!!
My PKE is now working again, however I think I have a delay relay problem. My interior lights stay on for the 15 minutes no matter what I do. Once I open a door, they come on and stay on for 15 minutes no matter what; waking the car up for the first time, walking up and opening a door to get in and start it and drive they stay on for 15 minutes while driving; shut it off and walkway with the key fob and its locks itself but the interior lights stay on for 15 minutes. Weird thing is when they are on, I can still walk up with the key fob and the car recognizes the signal and unlocks/locks like normal. After 15 minutes when the lights are out, I walk up with the key fob and the PKE system doesn't wake up. I have to use either key in the door lock switches, but the interior lights do not come when I turn either key in either door lock switch any way even though I unlock either door(still no interior lights), only after opening either door the interior lights come on along with hearing and seeing the door locks immediately respond to the key fob. Crazy, but I have no clue what is going on. I did just replace one of the door ajar switches last week including adjusting both switches and also ran codes to make sure they were both functioning correctly in Module 1.3 input 04 and 05. I did notice on Module 1.3 input 03 Door key switch alarm info is showing 1=enabled. I am not sure if that means the CCM thinks the key is in either door lock but when I disconnect the harness that attaches to the back of the door cylinders and check 1.3 input 03 it still shows 1. I don't know if that means the CCM thinks the key is always in either door lock as if I am approaching the car at night and signaling for the interior lights to stay on 15 minutes. If so, how do I fix that? And how does that affect the PKE not responding after 15 minutes...? I will also add I change the PKE module and got the same results. So far, I changed both lock cylinders in the doors and made sure I lubed the inside of the cylinders pretty good. I attached the harness to the back of the cylinders once they were in and connect all the bars and linkages inside the door handles...
One of your door /hatch , light dimmer switch is faulty/set to on/or needs adjustment. Sounds like the interior lamps are staying on due to one of the switches are open or on/ They time out after about 15 minutes. You need to find someone with a tech1a or buy yourself a service manual or take it to a shop . You are throwing parts that what is likely a simple issue but I wish you the best of luck!
I doubt it's one of the door lock switches or light dimmer. It's convertible so it doesn't have a latch for the rear glass. The dimmer switch works perfect and the CCM shows perfect input on the door ajar switches. So I am thinking its the relay... Thanks for the reply Corvette95...
I’m glad your doing your due diligence. I think the convertible hatch may have a light switch, would have to look it up in book. Your description to to the tee of a time out of the battery saver system such as doors locks, even ignition accessory switch. It sounds like you have done the obvious but I would still stay in that area until you are comfortable you have covered not only the obvious switch but the branch systems . Wish I could
help more, this definitely sounds like a hands on problems , hard to diagnose over the Internet . While, it may lean to CCM they are replaced 9 out of 10 times without it being the problem . Ignition switch issues also come t mind, dash light dimmer, any aftermarket alarms or radio etc? Even a bats bypass. If the systems detects any internal activity the ccm comes out of sleep mode, which usually produces an alarm. Does your horn work and beep property when you walk away? Is PKE set to on? Or do you have it off? Try to turn it off and test if on. Also under hood mercury sensors could be bad, that’s rare but do you park on a high angle?
So, I got the PKE to work and recognize the key fob no problem. However, the interior courtesy lights still stay on for 15 minutes exactly! Even if I open the either door and let the car sit, or start and go for a drive, the interior courtesy lights stay on for exactly 15 minutes! I have narrowed it down to the door lock key switches or the courtesy light relay under the passenger dash. I am not sure if its the door lock key switches, they are getting power but is there a way to check them within the CCM by pulling codes in module 1.3? I tried module 1.3 input 03 and it shows 1 the entire time whether either key is in the ignition or not and turned anywhere besides 12 o'clock.
Here is something else I noticed, when I use the key fob to arm the car by walking away and removing the key fob from the proximity of the car, as long as I walk back up to the car to unlock it within 15 minutes(courtesy lights on) the key fob still unlocks the doors! After 15 minutes(lights out) the key fob won't wake the car up or unlock it. Therefore, I think its a door lock switch because the CCM thinks a key is in either door lock. Also, I just replaced both door handles and key cylinders!!! I replaced them because the driver side door lock broke preventing me from removing the key after unlocking it one afternoon. I stuck the key in to unlock the door since my PKE key fob wasn't working back then and the round key unlocked the door but I couldn't remove it. I drove home with the key stuck in the door lock and took the panel off to remove the key cylinder once I got home to get the key out. I replaced everything and put the harness back on the door lock cylinder making sure the key is at the 12 o'clock position on both. However, I am not sure if the CCM(which counts more than my eyesight verifying what I think is 12 o'clock) is registering the key positioned at 12 o'clock. If anyone can offer an explanation or advice, that would be greatly appreciated!
Above is a picture of the lock cylinder with a plastic collar that easily slid off but broke once I touched it on both lock cylinders. Are these somehow need because I reinstalled the new lock cylinders without them but can't tell if I need to get more somewhere...
And above is the wiring harness that slides over the end of the lock cylinders... both have power when I tested them and I aligned the the key sits at 12o'clock position when the key is in the insert position....
New parts are bad too. Also maybe a wire, or installation issue or even corrosion down the steering column or elsewhere. GET A FSM, it's your friend if you follow it.
Last edited by corvette95; May 14, 2020 at 08:08 PM.
So quick update, I replaced the door lock switches and after a long delay of cycling the locks over and over for 5-10 minutes at time for several days straight... I was giving up on the system walking away from the car one night and out of the blue, the door locks began to work perfect. Almost as if the system was out of sequence and reset itself after multiple cycles of the key fob being brought in and out of proximately to the car. Don't know if that is possible or some type of internal reset or something, but frustrating! It works fine now... was ready to give up but I am a true Vette owner who wants the car to work factory original with the car! Worth it! Headaches go away, Vettes don't!!!!
93' Convertible PKE Problem
