2006 GMC Envoy XL gas gauge reads empty after filling continues reads empty and the light is on then the check engine light came on what can be the problem how ca i fixe it to save mesome $$$

Gas gauge readings are controlled by the sending unit on the fuel pump. I do not believe there is a separate fuse for any particular gauge. In order to fix it, you have to remove the fuel pump from the gas tank, determine if the float is stuck or the sending contacts are out of alignment or dirty. Some can be repaired, but most are not serviceable. Remedy: replace the fuel pump and sending unit assembly. I would first inspect the wiring from the fuel pump connector(s) to make sure you have good connection and wire integrity.

You can just replace the gas cap...However about the fuel guage fluctuates back and forth...thats due to the sending unit, which is located on the fuel pump itself

This is a safety feature that the vehicle brings. You need to reset the E.C.U on dealership or it will keep doing it to you. It was probably caused by one single time that you did not closed the fuel cap correctly. Good luck

You will need to replace the fuel level sensor which is in the fuel tank.They have a lot of problems because the metal fingers on the sensor wear off and gives you the incorrect readings.This will also cause the check engine light to come on.You will probably have a level sensor code.This will be a lot easier if the fuel level is down to about a quarter tank or less.Also you should be able to get just the level sensor and not have to get the complete fuel pump module.Good luck.

Common problem on the 03-06 Envoy instrument clusters for the fuel gauge to go out. It's usually caused by one of two main problems, either the stepper motor on the cluster's circuit board is going out or the sending unit on the fuel pump is going out. Check out this blog post about the problem - Envoy fuel gauge problems

The sending unit in your tank is bad replace it.

Sending unit. Its all one unit including fuel pump, float, ect. The check engine light is because of the high or low resistance in the unit. Let me know if you have already fixed.. You have to drop the tank to get to it also.

a fuel sending unit seems to be the most popular solution. the part is about $40. I think the labor is what's going to kill you.

most likely a fuel sending unit problem in the tank. could also be problem in dash but sending unit is first suspect

The sulfur content in the fuel is contaminating the contacts of the sending unit.

Some people have had good luck with some fuel system cleaners solving this problem. The cheap stuff doesn't seem to do the job.

Not that GM isn't completely exonerated from fault but the gas stations don't do a very good job of watching what the stations sell.