Pull off the cover to cover to access the fuse block.
1998 chevy silverado door lock fuse.
To remove fuses if you don t have a fuse extractor hold the end of the fuse between your thumb and index finger and pull straight out.
I read right past the c3500 part of your post.
Pull off the cover to access the fuse block.
All unlock fuses have no power when i check them with the test light.
If they do not then you may have a bigger issue.
You may have spare fuses located behind the fuse block access door.
When i press any unlock button there is a clicking near in the interior fuse box.
The picture of where the power door lock relay is located is on page 261 of my 92 schematics 92 gm factory electrical diagram manual.
Instrument panel fuse block.
1998 silverado crew cab puthe problem.
Put a test light on the 15 amp lock fuse and press the.
Gmc sierra mk1 1999 1998 fuse box diagram.
15a unlock fuse located in left fuse box.
These can be used to replace a bad fuse.
Driver door unlock relay in left fuse box.
One of the easiest ways to diagnose the switch is by trying to use other door locks in the car.
For 1996 chevrolet 1500 the fuse block door access is on the drivers side edge of the instrument panel.
Since the door will unlock but won t lock it would seem to be a problem with the gray blk wire at the lock actuator.
There is no power going to any of the locks when i try to unlock them.
If the driver door lock switch doesn t work try the passenger door lock switch or any other door.
So your truck is an obs gmt400 and you should be looking for info up to 1998 not 2000.
The power locks will lock just fine.
Door lock relay in left fuse box.
You can remove fuses with a fuse extractor which is mounted to the fuse block access door.
Niether door lock button will operate the locks but the key fobe remote will.
The door lock relay is located under the center of the dash.
Sorry but i m not an installer just an owner trying to find a solution.
Door lock relay in left fuse box.
Could the driver side control pod be the problem.
The diagram posted above does not apply to your truck.
If they work then you ve narrowed down your problem.
1998 silverado door lock.
Gmc sierra mk1 fuse box instrument panel.
Check the position 13 power amp cigarette lighter door lock relay power lumbar seat and a position power door lock six way power seat keyless entry module.