My gas gauge will not give accurate reading and jumps around. I think it is the sending unit sensor. Can the sensor be change easily or do I need a reapair shop.
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1999 Buick Park Avenue Question: fuel pump/gauge sensor
Answer #1dandd September 09, 2010, 17:17Master
Try a bottle of Techron in your tank. GM fuel sensors are very,very sensitive to the sulfur in gasoline and they will malfunction. We at RepairPal went to the Chevron Plant and they showed us what was going on with this very common issue on GM vehicles in their test Labs.
If the $8 bottle of Techron in a full tank does not help then you will have top lower the fuel tank and replace the Fuel Module which contains the level sensor, which runs about $500-600 for just the part, I am sorry to say.