I have a 2003 Chevy Tahoe. No problem this

That little slide on wire for the starter solenoid is the answer. Squeeze tight or replace with new and start! : )

Many possible causes....Too little info to make an intelligent suggestion. Try charging the problem vehicle's battery with jumper cables for 2 minutes with the supply vehicle running at fast idle (or about 1500-2000 RPM, if it is tachometer equipped) before you try to crank the problem vehicle on a cold morning. If it starts right up, you likely have a weak battery that needs replacing.

https://www.modifiedlife.com/2003-chevrolet-tahoe-radio-wiring-guide/

the fuel level gauge just went out na dthats why the light is on. to replace it you have to replace the entire sending unit. cost is $500.00 plus to have replaced. if you can live with it and keep check on your milage, I would wait for the pump to go out.

Check the connections on the battery and where they connect to the engine/starter. Do you get any inside lights at all?
Check the voltage on the battery - should be 12 volts (engine off)

Have you ever replaced the starter? If not you should have it tested, GM's have common starter problems and your vehicle is in the age bracket for starter to go bad.The easy fix is to have someone turn the key like they were going to start it while you get underneath the truck and hit the starter with a hammer a few times while they are trying to start the vehicle. If the vehicle starts then you know you have a starter problem, if not, back to the drawing board.

Check engine light came on for a reason. Could be one of a hundred reasons. My adivce would be to go to Advance Auto, O'Reilly's or any of the many Parts Stores and "borrow" a Code Reader. Easy to use and most places let you use it for FREE. The Code Reader will show what Code was set and what it MIGHT be. The Code Reader also resets the Codes and the Check Engine Light will go off.... until it senses something is wrong with your truck.

Good Luck.

Turn your key to the on position(do not start), then push the throttle pedal to the floor three times, turn of the ignition, wait a second or twothen start the engine, this should reset it. Works on the 2000 Tahoe LT 4WD

you shoul replace all 4 then remove batt cables hold together 10 sec reinstall cables

it is in the valley of engine behind intake.at back of engine you can get it out with a thin walled oil sender socket.