Cluster panel and gauges flicker only while moving. when stopped may come on may stay off

If all the gauges on your 2008 Chevy Tahoe have stopped working, it is possible that there may be an issue with the instrument cluster itself. A malfunctioning instrument cluster can cause the gauges to stop working all at once. Other potential causes could be faulty wiring, a blown fuse, or a defective sensor. I would recommend taking your vehicle to a qualified mechanic or dealership to have it diagnosed and repaired.

The first thing you should do is check the fuses. It's possible that a fuse has blown, causing the lack of power to the dash lights, gas gauge, temperature gauge, oil pressure gauge, and instrument panel lights. If the fuses are all good, then you may need to check the wiring harness for any loose connections or damaged wires. If the wiring is all good, then you may need to replace the instrument cluster.

Have you checked the gauges fuse ?

Not the oil level sensor , Could also be the gauge is bad . You could try buying a used cluster at automotive salvage yard for $20 - 30 buck . Had a problem with chevy cavalier with the temp gauge showing overheating , just started the car so i know it wasn't overheating . Changed instrument cluster , the gauge work normally . You could also check the oil pressure with a pressure tester . Screws into when sensor screws into . Videos on youtube . How To Check Oil Pressure EricTheCarGuy

Some of the things that will stop a gauge cluster from working is a bad connection (where the harness plugs into the cluster, A defect inside the ignition switch, a blown fuse or bad relay, or a defective gauge cluster.

check the fuse panel in the drivers side footwell, there should be a fuse for the instrument cluster, if not that check the fuse box in the engine compartment (top end of passenger side) there is usually 2x 30a fuses for the general ignition and power.

Checked Every fuse in the fuse box (no small task).This includes #4 - Power point Instrument Panel, #14 - Day time running lamps (auto lamps doesn't work nor does auto lock), #27 - ignition switch run feed, #35 - Instrument Cluster, #41 - Instrument Cluster, #42 - Delayed Accessory, #45 - Ignition switch run/start feed, #102 - Door locks body security module, #103 - Ignition switch, #110 - Ignition switch, & #116 - Ignition switch. But I also check all other ones as well, they all register OK. AC panel & radio work. Turn signals work. Mileage does not work, trip computer does. So, basically, everything works except auto head-lights, auto locks, and the dash cluster (no MPH, RPM, mileage display, Fuel, Temp, Tran Temp, and Oil Pressure).

remove cluster clean terminals with dielectric cleaner then coat pins with dielectric grease that shoul do it

The instrument cluster operates independantly of the lighting for them. You could possibly have a fuse somewhere that has blown causing all gauges to stop, or it could potentially be that the cluster itself is bad and needs replaced or this could be a sign of a wireing harness failure of the instrument cluster. I'm afraid your best bet is to take it in and have it looked at by someone trained in dealing with those parts of the system.

if nothing on the guage cluster is working, chances are you lost power to the whole cluster. try checking your fuses. betcha one of em is blown.