power door and locks issues

I have a 98 transport that I bought used last summer. When I got it, it was missing the keyless remotes, but very clean with 133,000 miles on it. There have been issues with the power slider and power locks since day one (I knew them when I bought it). The power locks don't work from either driver or passenger side. It is not dead. It sounds and feels like it is trying to work, but doesn't. The power slider is very similar. It clicks and sounds like it is going to go, but doesn't. It operates manually fine and that is what we've been doing. The used car lot where we purchased told us that the power locks and door would work if we got new remotes and reprogrammed. Anyone know if this is true or have other ideas?

Just yesterday the open alarm on the door sounded constantly whenever the van was in gear. Using info from the great people here, I ran the diagostic check and got a 2-3 code, then after running the check, the alarm is not sounding. Any one have the answer for this code?

I am trying to keep the investment down on this vehicle as I have just recently blown my emergency fund on the wonderful intake manifold and head gaskets. Seems to be easy company to find. We got rid of our 96 Lumina when the head gasket went at almost the exact same mileage on a 3100 last summer. I'm a loyal GM guy (just one of the problems that I inherited from generations), so I got myself into this van. It has been great otherwise and now with a bunch invested in it, I'd like to sort out this power slider and locks thing.

Any help would be great. Thanks

Not sure if this will help but its worth a look.

Power Door Locks Inoperative - Lockout Feature
Step
Action
Value(s)
Yes
No

1
Was the Body Control Module Diagnostic System Check performed?
--
Go to Step 2
Go to Diagnostic System Check - Body Control System in Body Control System

2
Close all vehicle doors.
Ensure the IP dimmer switch is set to the OFF position.
Turn on the interior lamps override switch (enabling the interior lights).
Turn the ignition switch to the RUN position.
Open, then close all vehicle doors, one door at a time.
Did the courtesy lights turn on with a door open, and turn off with all the doors closed?
--
Go to Step 3
Go to Step 5

3
Ensure all vehicle doors are closed.
Turn the ignition switch from the RUN position to the LOCK position.
While observing the courtesy lights, remove key from the ignition key cylinder.
Did the courtesy lights turn on when removing the key from the ignition key cylinder?
--
Go to Step 4
Go to Step 6

4
Insert key in the ignition key lock cylinder.
Leave the ignition switch in the LOCK position.
Open the driver's door.
While observing the door locks, press lock on door lock switch momentarily.
Close the driver's door.
Open the left sliding door (if equipped).
While seated in the driver's seat press lock on door lock switch momentarily; observe the door locks.
Open the right front door and within 3 seconds, press lock on door lock switch momentarily while observing the door locks.
Close the right front door.
Open the right sliding door.
Press lock on door lock switch momentarily; observe the door locks.
Doors do not lock when pressing lock on either door lock switch with the key in the ignition key lock cylinder and a door open.

Do the door locks operated as described above?
--
Go to Step 7
Go to Step 8

5
The lockout prevention feature is malfunctioning due to a malfunction between the BCM and the driver's door lock ajar switch. Refer to Interior Lamps System Check in Lighting Systems for diagnosis and repair of the interior lights door lock ajar input.

Is the action complete?
--
Go to Step 9
--

6
The lockout prevention feature is inoperative due to a malfunction between the BCM and the ignition key alarm switch. Refer to Diagnostic System Check - Audible Warnings in Instrument Panel, Gauges, and Console for diagnosis and repair of the key in ignition reminder chime and the ignition key alarm switch.

Is the action complete?
--
Go to Step 9
--

7
The lockout prevention feature is working as designed. Refer to Automatic Door Lock Circuit Description for more information.

Is the action complete?
--
Go to Step 9
--

8
Inspect the BCM connectors for poor terminal contact.
If BCM connectors are OK, replace the BCM. Refer to Body Control Module Replacement in Body Control Systems.
Is the repair complete?
--
Go to Step 9
--

9
Turn the ignition switch to the LOCK position.
Reinstall connectors/components removed.
Turn the ignition switch to the RUN position for 6 seconds.
Turn the ignition switch to the LOCK position.
Remove the BCM PRGRM fuse.
Turn the ignition switch to the ACC position. (The BCM sounds the chime a number of times equivalent to the BCM type installed on the vehicle).
Within one second, turn the ignition switch from the ACC position, to the LOCK position, then back to the ACC position. (The BCM sounds any DTCs stored).
Are there any BCM DTCs present?
--
Go to Diagnostic System Check - Body Control System in Body Control System
Go to Automatic Door Locks System Check



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Just yesterday the open alarm on the door sounded constantly whenever the van was in gear. Using info from the great people here, I ran the diagostic check and got a 2-3 code, then after running the check, the alarm is not sounding. Any one have the answer for this code?23 is no latch input. Basically the door closed but it didn't sense the door was actually latched. Check out this PDF (http://mysite.verizon.net/chris.drudge/psd.pdf) that has the diagnostics for the PSD. Page 51 starts the section on error code 23.

The reason why it doesn't sound after you ran the diagnostic is exiting diagnostic mode clears the code. If it's working now, I wouldn't worry about it. If it isn't, the first thing I'd do would be take some extra fine grit sand paper and clean the plunger contacts for the door and the strike plate on the door frame.