1999redvette

I have a question. I have a 99 corvette and none of the gauges work in dash cluster except the voltage gauge. They all was working the last time I drove it a week or so ago. Would anybody have any idea what's wrong with it?

dadaroo

Do they all sweep at startup?


Mr. Sam

Phanni

Most likely a failure of the 'multi function switch', which is your turn signal/lights etc switch on the left of the steering wheel. It has many electrical contacts in it to perform a lot of different functions for the different lighting/dashboard. This is a relatively common occurrence with C-5s. I'd contact one of the guys that recycles broken/wrecked C-5s. Vettenuts )a forum vendor), or John Llewellyn 865-604-0498 one of them will have what you need. It is a simple task to replace.

sfc rick

Check your instrument cluster fuse.

johnson-rod

Try cleaning the big ground connection on the driver's side up behind the headlight. I had some very "Christine" like symptoms and cleaning that ground fixed them all.

dadaroo

The MFS has nothing to do with the IPC gauges. No circuit interaction at all.


Mr. Sam

1999redvette

They do all sweep dadaroo. Thanks every body for the help.

dadaroo

OK, that means the gauges are good.

The Voltmeter gauge uses actual voltage and it works.

ALL the other gauges are fed by the Serial Bus.

Can you use the DIC buttons to call up information that would be from the serial bus like oil pressure, etc?


Mr. Sam

1999redvette

Ok i found the dic buttons. There's a catch. The only thing I'm using on the cluster is the speedometer, all the others I have aftermarket gauges for them. Thanks

dadaroo

Read your owners manual. It will tell you how you how to display information on the DIC screen.

Do these gauges use the serial bus to work? Did you install them?


Mr. Sam

1999redvette

They don't I have a carbed motor in it. I just used regular sending units.

1999redvette

I'll try doing what you said this weekend
. Thank you

dadaroo

Am I correct you are only using the Voltmeter and the Speedometer from the IPC and
the other gauges are analog and located separately?

1999redvette

Yes sir

1999redvette

I forgot to tell you that when my cluster quit working my windows quit working also.

Allzwell

That could very well be the ground wire that runs out to the door. I had that happen and the windows stopped working as well as the gages.

check the wire harness that runs through the rubber accordion tube between the chasis and the door.
There's a bare wire with a clear tube over it, if it shorts to ground it can be causing your problem. Wrap the exposed wire with electrical tape or some other insulation and you'll be good to go

dadaroo

I think you are confusing the Bose connector (Blue) and wiring that have nothing to do with the other door connector (Black) and their functions. The wire you referred to is the Drain wire for the audio signal and is not a ground.

OP, when you say "windows" can you operate the right one from the right door switch?

Check IPC fuse 19 in the I/P fuse box, it could be why the speedometer is not working.


How are the other gauges fused?


Still need to know if you can pull up serial bus information on the DIC screen. Pulling up any DTC codes would be adequate.


Mr. Sam

1999redvette

I couldn't find any codes. I drove it earlier and the speedo worked for a few min then stopped working again.

Allzwell

Should show you some "H" history codes

My bet is still on the ground wire

dadaroo

OK, you had no codes so what could you pull up??????????????