Yukon Denali

Erratic Fuel Gauge Operation on GMC Yukon Denali

Problem Description and Possible Solution

It is common for the fuel level sensor in the fuel tank read the fuel level incorrectly. The sensor must be replaced to correct the condition. Our technicians recommend having the complete fuel pump module replaced on high mileage vehicles.

Problem Data
RepairPal Verified
Average mileage: 153,072 (60,000–250,000)
7 model years affected: 1999, 2000, 2001, 2002, more2003, 2004, 2005
34 people reported this problem
Viewing 1 - 18 of 18 comments
Fuel gauge is not working property its goes to full an its goes back to empty it not reading the gas property
When it's cold outside the gauge shows there is no gas in the tank but when it warms up then it starts working. Haven't had the problem fixed yet.
erratic fuel gage started acting up during record hot weather, maybe unrelated. mechanic recommended changing sensor and fuel pump even though mileage is low
Fuel gauge reads about 1/8-1/4 tank lower than actual level. Low fuel warning comes in at expected gauge reading but again the gauge reads incorrectly low. I know the gauge reads low due to the amount of fuel I can add now at a particular fuel level reading compared to how it once was.
The file gage gives erratic readings when below 1/3 of a tank. How much should it cost to replace the sensor and other related parts?
I replace the fuel pump any still doing the same thing it works and then it stops working it works and stopped working
The fuel gauge wont read correctly. Some times it is pegged and sometimes its somewhere in between. Today it worked correctly but the Voltmetter did not. It was pegged. Any ideas?