Tachometer, Spedometer, Alternator Guage Not Working

[gasterphaz]

Just ran my '93 2500 thru the car wash to get the bug guts off. As I was pulling out I noticed the tachometer, speedometer and alternator gauge inop. When I got home I noticed no idiot lights.

 

Any suggestions where I should start looking? I already checked the connections to the trans. they seem fine.

[93_Silverado]

Just ran my '93 2500 thru the car wash to get the bug guts off. As I was pulling out I noticed the tachometer, speedometer and alternator gauge inop. When I got home I noticed no idiot lights.

 

Any suggestions where I should start looking? I already checked the connections to the trans. they seem fine.

 

 

Try any of the fuses and check or any loose or bare wires under the hood.

[gasterphaz]

Just ran my '93 2500 thru the car wash to get the bug guts off. As I was pulling out I noticed the tachometer, speedometer and alternator gauge inop. When I got home I noticed no idiot lights.

 

Any suggestions where I should start looking? I already checked the connections to the trans. they seem fine.

 

 

Try any of the fuses and check or any loose or bare wires under the hood.

 

 

 

Yep, it was the fuse. Replaced it turned the key and had idiot lights. Started the truck and lost another fuse (30 amp). I suspect it is the wiring from the transmission. On a 4L80E trans, which wiring harness is the speed out, the one toward the front of the vehicle or aft?

[93_Silverado]

Just ran my '93 2500 thru the car wash to get the bug guts off. As I was pulling out I noticed the tachometer, speedometer and alternator gauge inop. When I got home I noticed no idiot lights.

 

Any suggestions where I should start looking? I already checked the connections to the trans. they seem fine.

 

 

Try any of the fuses and check or any loose or bare wires under the hood.

 

 

 

Yep, it was the fuse. Replaced it turned the key and had idiot lights. Started the truck and lost another fuse (30 amp). I suspect it is the wiring from the transmission. On a 4L80E trans, which wiring harness is the speed out, the one toward the front of the vehicle or aft?

 

 

 

I believe it's the aft one but not possitive.