1999 Buick Regal LS Fuel Gauge Inoperative

1999 GMC
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NCCHEVYMAN
  • MEMBER
  • 2 POSTS
99 Buick Regal LS....Fuel Gauge Inoperative When the car is started the gauge will read full after a few moments it will read empty, but when I take the car for a ride the gauge will register momentarly before it goes back to full. Is this problem in the dash cluster or the tank?
Apr 1, 2006 at 7:57 AM
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LOSONE
  • ✓Experienced Mechanic
  • 1,616 POSTS
The fuel gauge sending unit is part of the fuel pump assembly and is in the gas tank. It will require dropping the gas tank and replacing the assembly. A lot of times a good mechanic can buy an after mafket fuel sending unit and make it work. It is a costly job. Around $350 to $500. Insure you have a small amount of gas when you take it in. Good Luck
Apr 1, 2006 at 8:17 AM
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Suggested Repair

The fuel gauge sending unit is part of the in-tank fuel pump assembly. Drop the tank and replace the assembly, or have a mechanic fit an aftermarket sending unit. Expect about $350 to $500, and bring the vehicle in with only a small amount of fuel.

Conversation Summary

The owner of a 1999 Buick Regal LS says the fuel gauge reads full after startup, then drops to empty, and only briefly registers while driving before returning to full. They ask whether the fault is in the instrument cluster or the tank. The expert says the sending unit is part of the fuel pump assembly in the tank and typically requires dropping the tank for replacement; an aftermarket sender can sometimes be used. Estimated cost is $350 to $500, and the tank should contain only a small amount of fuel for the job.

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