1996 Lights not working

[Obslova]

I would claim those lights are "on" because of the DRL feature.



I'm willing to bet it's the hazard switch, but I've been wrong before (as recently as today)

I’ll order one and put it in

 

[1998_K1500_Sub]

The dash and cluster lights never come on no matter what should i just try a bew switch first

I'm not sure what you're saying.

I’ll order one and put it in

Consider debugging it a bit more to confirm the odd operation, I've sent you the wiring diagram.

 

[Obslova]

I'm not sure what you're saying.



Consider debugging it a bit more to confirm the odd operation, I've sent you the wiring diagram.

The dash lights like radio lights and ac controls the gauges don’t come on when the light switch is on that’s what i mean

 

[1998_K1500_Sub]

The dash lights like radio lights and ac controls the gauges don’t come on when the light switch is on that’s what i mean

I suggest you find a wiring diagram and try to find the source of the problem that could cause so many lights to be inoperative. The problem's likely a simple one... blown fuse, severed wire, bad switch, or... the thumbwheel (the one next to the headlight switch) that allows the driver to DIM the dash / radio / AC lights is either broken or simply set in the lowest position. CHECK THIS THUMBWHEEL FIRST!

The GM service manuals for most of the GMT400 trucks can be found here in .pdf format:

GMT400 CK Service Manual Project

GMT400 CK Manual Project - The 1947 - Present Chevrolet & GMC Truck Message Board Network

GMT400 CK Manual Project The 1988 - 1998 GMT400 Chevy & GMC Pickups Message Board

67-72chevytrucks.com

 

[east302]

the guy has the brake controller wired with twist nuts

Check to see what he did at the trailer connection in the back. A short there can impact the interior lights - just fixed this on my son’s truck where a half-assed trailer wiring job popped fuses and caused a host of lighting issues.

Otherwise, I’d run through those wiring diagrams before condemning the hazard switch.

 

[Obslova]

I suggest you find a wiring diagram and try to find the source of the problem that could cause so many lights to be inoperative. The problem's likely a simple one... blown fuse, severed wire, bad switch, or... the thumbwheel (the one next to the headlight switch) that allows the driver to DIM the dash / radio / AC lights is either broken or simply set in the lowest position. CHECK THIS THUMBWHEEL FIRST!

The GM service manuals for most of the GMT400 trucks can be found here in .pdf format:

GMT400 CK Service Manual Project

GMT400 CK Manual Project - The 1947 - Present Chevrolet & GMC Truck Message Board Network

GMT400 CK Manual Project The 1988 - 1998 GMT400 Chevy & GMC Pickups Message Board

67-72chevytrucks.com

I’ll give it a go and see

 

[618 Syndicate]

The dash lights like radio lights and ac controls the gauges don’t come on when the light switch is on that’s what i mean

Is the illumination roller below the light switch turned down?
When the switch is off but the lights are on is there a green light illuminated on the dash?

 

[Obslova]

Is the illumination roller below the light switch turned down?
When the switch is off but the lights are on is there a green light illuminated on the dash?

The roller is turned up and yes the green light is on in the Cluster when the switch is at off

 

[Jesse_Wenting]

Note that, unlike the trucks, the Suburban/utility GMT400s (at least the later ones, 1998 in particular) do not preference the brake lights over the flashers; if the hazards are on, the lights flash regardless of the brake light switch / brake pedal position.

Don't suppose you know if anyone's ever re-wired one of the trucks to the suburban style? Having the hazards stop flashing during braking has always bugged me on these trucks.

Far as I'm concerned if you've got your hazards on anyone around you should be paying attention and be ready to react to something like a sudden deceleration.
Not that when my hazards are on I spend much time slowing down...

 

[1998_K1500_Sub]

Don't suppose you know if anyone's ever re-wired one of the trucks to the suburban style? Having the hazards stop flashing during braking has always bugged me on these trucks.

It should be easy to do.

Look at the wiring diagram I posted earlier. To change the trucks to be like the utilities,

- remove the power connection coming from the relay going to the hazard switch (see the terminal marked "E2" on the switch in the wiring diagram) and

- move it the terminal marked A1, as shown on the switch in the diagram.

I would guess the wires are already present on the hazard switch, you just need to change the wiring at the connector in the steering column where the hazard switch connects to the vehicle.

The GMT400 utilities have a connection on the lead going to A1 and probably have the connection on E2 unpopulated (or otherwise unused); the opposite should be true of the trucks.

Maybe we ought to make this a sticky.

I feel the same way you do; I want the flashers to be flashing when they're supposed to be flashing.