1993 40th Anniv. Coupe

[Harold W.]

I'm having a problem with the instruments on a 1993 40th Anniv. coupe with automatic transmission. The speedometer, radio volume, and cruise control get "crazy" usually when driving, especially starting from cold, but it has also happened to the speedometer when idling in Park. The radio volume will suddenly go to maximum and as will the speedometer, and the cruise control is themnerratic. I have noted in the manual that there is a vehicle speed sensor at the rear of the transmission which sends a speed signal to the computer and is related to the radio, cruise, and speedometer. Is this the source of the problem?? I have identfied the part number as 10456092, and can't locate one at the local Chevy dealers, as it is apparently discontinued. The car has about 60,000 miles, and other than brakes and tires and a replacement ECM 18 months ago has had no repair work. If this part is the source, any idea where I can get one?

Harold Wrede

[Jack H.]

Re: 1993 40th Anniv. Coupe

For the parts, call Mike at http://www.artscorvetteparts.com/default.aspx . I would also check for bad grounds before doing anything.

[Harold W.]

Re: 1993 40th Anniv. Coupe

Thanks for the info, I'll start checking the harness and grounds. Also, forget what I said about this problem happening in Park. It has happened idling in neutral, and therefore possibly rolling slightly, while exiting the garage. Thanks for the reference to Artscorvettes. He has a lot of parts, but not this specific one, which is the later production part number for 1993 with auto trans. They're very scarce, but I found one in upstate NY.

Thanks,

Harold Wrede

[Jim T.]

Re: 1993 40th Anniv. Coupe

Harold for a few dollars you can make a phone call to www.gordonkillebrew.com and get your problem identified. Don't know if you were a Corvette owner in 1993, I was and called the Corvette plant's Action Center to obtain information about fixing my 1985. It was a free service and Gordon Killebrew was one of the persons that proviced the service to Corvette owners.

[Jack H.]

Re: 1993 40th Anniv. Coupe

That really is not a bad idea. He has helped out a number of guys. He charges for it but that's because he can.

[Mike M.]

Re: 1993 40th Anniv. Coupe

The alarm on my 40th would go off at any time, any place, for no reason, usually when I was at work or about 2:30 a. m.
I ended up having to disconnect the battery everytime I parked it.
Nobody was ever able to figure it out.
Apparently computer gone wild. Hope your outcome is more successful.
HaND