Fuel Gauge problem

Hello,
I have a 99 blazer. I have a major problem. My fuel gauge bounces around once it goes under 3/4 of a tank. I could have an 1/8th of a tank and have it show full. My check engine soon light came on. I brought it to the shop and got a error po463. P0463 - Fuel Level Sensor Circuit High Voltage.

How difficult is it to change that sensor on the fuel pump in the tank?

Also what is the cheapest way for me to hook into my truck and read those error codes?

Thanks in advance.

Replace the sending unit in the tank.

You can get a code reader off of ebay for cheap though it might not be able to clear the codes.

I had the same problem, Replaced the pump and sending unit (all one unit) and all is well. Big$$$

Has anyone replaced the feul pump at home. How hard is it to do. What is the best instruction manual for tank removal.
Thanks

Has anyone replaced the feul pump at home. How hard is it to do. What is the best instruction manual for tank removal.
Thanks

It can get quite involved and messy especially if you have a full tank.