The speedometer, odometer and gas guage keep blinking on and off on my 1992 Cutlass Supreme, sometimes only part of them will go off and sometimes all of them how can I fix this?

If the speedo and odometer are both dead, you should have shifting problems and a check engine light. The speed sensor in the transmission has probably died.
If the speedo does not work but the odometer does, chances are the problem is in the speedometer head.

Are you sure you have it set on MPH rather than KPH? GM had a lot of problems with the digital dashboards back then. I had a Cutlass myself with similar problems. Does the odometer, trip odometer work O.K.? Are the other gauges working too? Good Luck. . .

Check oil first, Low oil sensor will shut down if more than a quart low. Change fuel filter, could be fuel starvation, change the air filter. stopped up air filter will put MAF sensor out of range. PERFORM OBDII SCAN SOON.

check your speed sensor. may be faulty, is locate it on transmission.

Worn out gauges would be the first guess. The next would be the oil pressure sensor....

The gas gauge could have problems from a bad float in the gas tank or the wires to the sending unit are badly deteriorated.

It is not the computer.

If you take the dash apart and remove the digital insturment panel.., use a soldering iron and re-tin.., or heat the solder connections on the back of the circuit board.., just enough to briefly melt the solder.., to re-establish good electrical connections. You specifically want to pay attention to the IC Chip on the circuit board.., which is a 14 pin IC chip that is Black in color.., and measures about 5/16" x 3/4" usually labelled IC2 on the printed circuit board. You can start with this component and re-try connecting to the harness in the dash to see if it works.., if it works.., great.., if not.., just go ahead and re-tin all of the solder connections on the back of the circuit board. The 14-Pin IC Chip is usually the main source of the problems with this digital dash panel.

I worked for Buick from 90-93 as an A tech. The Regals and Cutlass had defective clusters. There is not much you can do other than replace the cluster. (is everything else working on the cluster?)

I had a 1990 cutlass that the odometer quit at 199000. I just kept driving it, or I should say my son kept driving it.

My gas guage, speed odometer and tempiture does not work
The speed odometre is reading 9999999 what should i do

Problem is in the guage cluster assy.The ODO is mechanical,serviced by replacing guage cluster.

check the vehicle speed sensor located on the transmission housing.