P0463 Code: Fuel Level Sensor Circuit High Causes and Fixes
Fix P0463 Fuel Level Sensor Circuit High. Learn causes like worn senders or wiring faults, step-by-step diagnosis, and safe repair tips to restore accurate fuel gauge readings.
Oct 20, 2026
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Buick Skylark Fuel Sending Unit
27 itemsFix inaccurate fuel gauge readings with a fuel tank sending unit built to track fuel level changes, correct stuck empty or full displays, and help you know what's really left in the tank.
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Spectra PremiumPart # FG91A
Spectra Premium FG91A Fuel Tank Sending Unit
4.617 Reviews
$89.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1970-1970 Buick GS, 1970-1970 Buick GS 455, 1970-1970 Buick Skylark, 1970-1970 Buick Skylark, 1970-1970 Buick Skylark, 1970-1970 Chevrolet Chevelle, 1970-1970 Chevrolet Chevelle, 1970-1970 Chevrolet Chevelle, 1970-1970 Chevrolet Chevelle, 1970-1970 Chevrolet Chevelle, 1970-1970 Chevrolet Chevelle, 1970-1970 Chevrolet Chevelle, 1970-1970 Chevrolet Monte Carlo, 1969-1970 Buick Skylark, 1969-1970 Buick Skylark, 1969-1969 Pontiac Tempest, 1969-1969 Pontiac Tempest, 1968-1970 Buick Skylark, 1968-1970 Buick Skylark, 1968-1970 Chevrolet Chevelle
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick Skylark
Item LocatedUnited States
Quantity1
Part interchange
FG91A, 4017019, 6428034, FG91A, 692241, TNKFG91A, E2618A, 19179689
item #1000Z1N2
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SOLD
OUTSpectra PremiumPart # FG88A
Spectra Premium FG88A Fuel Tank Sending Unit
4.617 Reviews
$58.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1967-1967 Buick Skylark, 1967-1967 Buick Skylark, 1967-1967 Buick Skylark, 1967-1967 Buick Special, 1967-1967 Buick Special, 1967-1967 Buick Special, 1967-1967 Chevrolet Chevelle, 1967-1967 Chevrolet Chevelle, 1967-1967 Chevrolet Chevelle, 1967-1967 Chevrolet Chevelle, 1967-1967 Chevrolet Chevelle, 1967-1967 Chevrolet Chevelle, 1967-1967 Chevrolet Chevelle, 1967-1967 Chevrolet Chevelle, 1967-1967 Chevrolet Chevelle, 1967-1967 Chevrolet Chevelle, 1967-1967 Chevrolet Chevelle, 1967-1967 Chevrolet Chevelle, 1967-1967 Chevrolet Chevelle, 1967-1967 Chevrolet Chevelle
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick Skylark
Item LocatedUnited States
Quantity1
Part interchange
FG88A, TNKFG88A, 4017315, 6428067, FG88A
item #1000YZQR
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SOLD
OUTSpectra PremiumPart # FG91B
Spectra Premium FG91B Fuel Tank Sending Unit
4.617 Reviews
$89.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1970-1970 Buick GS, 1970-1970 Buick GS 455, 1970-1970 Buick Skylark, 1970-1970 Buick Skylark, 1970-1970 Buick Skylark, 1970-1970 Chevrolet Chevelle, 1970-1970 Chevrolet Chevelle, 1970-1970 Chevrolet Chevelle, 1970-1970 Chevrolet Chevelle, 1970-1970 Chevrolet Chevelle, 1970-1970 Chevrolet Chevelle, 1970-1970 Chevrolet Chevelle, 1970-1970 Chevrolet Monte Carlo, 1969-1970 Buick Skylark, 1969-1970 Buick Skylark, 1968-1970 Buick Skylark, 1968-1970 Buick Skylark, 1968-1970 Chevrolet Chevelle, 1968-1970 Chevrolet Chevelle, 1968-1970 Chevrolet Chevelle
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick Skylark
Item LocatedUnited States
Quantity1
Part interchange
FG91B, 4017021, 6428837, FLS1079, FG91B, 692242, TNKFG91B, E2622A,
...View moreitem #1000Z1X4
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SOLD
OUTSpectra PremiumPart # FG91C
Spectra Premium FG91C Fuel Tank Sending Unit
4.617 Reviews
$61.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1972-1972 Buick Skylark, 1972-1972 Buick Skylark, 1972-1972 Oldsmobile Cutlass, 1972-1972 Oldsmobile Cutlass Supreme, 1972-1972 Pontiac LeMans, 1971-1972 Buick GS, 1971-1972 Buick GS 455, 1971-1972 Buick Skylark, 1971-1972 Buick Skylark, 1971-1972 Chevrolet Chevelle, 1971-1972 Chevrolet Chevelle, 1971-1972 Chevrolet Chevelle, 1971-1972 Chevrolet Chevelle, 1971-1972 Chevrolet Chevelle, 1971-1972 Chevrolet Chevelle, 1971-1972 Chevrolet Chevelle, 1971-1972 Chevrolet Chevelle, 1971-1972 Chevrolet Chevelle, 1971-1972 Chevrolet Chevelle, 1971-1972 Chevrolet El Camino
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick Skylark
Item LocatedUnited States
Quantity1
Part interchange
FG91C, 4017326, 6428838, FG91C, 692243, TNKFG91C, E2624A
item #1000YZ5X
Show less
SOLD
OUTSpectra PremiumPart # FG91D
Spectra Premium FG91D Fuel Tank Sending Unit
4.617 Reviews
$61.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1972-1972 Buick Skylark, 1972-1972 Oldsmobile Cutlass Supreme, 1972-1972 Pontiac LeMans, 1971-1972 Buick GS, 1971-1972 Buick GS 455, 1971-1972 Buick Skylark, 1971-1972 Buick Skylark, 1971-1972 Buick Skylark, 1971-1972 Chevrolet Chevelle, 1971-1972 Chevrolet Chevelle, 1971-1972 Chevrolet Chevelle, 1971-1972 Chevrolet Chevelle, 1971-1972 Chevrolet Chevelle, 1971-1972 Chevrolet Chevelle, 1971-1972 Chevrolet Chevelle, 1971-1972 Chevrolet Chevelle, 1971-1972 Chevrolet Chevelle, 1971-1972 Chevrolet Chevelle, 1971-1972 Chevrolet El Camino, 1971-1972 Chevrolet Monte Carlo
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick Skylark
Item LocatedUnited States
Quantity1
Part interchange
FG91D, 4017022, 6428837, FG91D, 692244, TNKFG91D, E2625A, 19179690
item #1000Z1UV
Show less
SOLD
OUTSpectra PremiumPart # FG02K
Spectra Premium FG02K Fuel Tank Sending Unit
4.617 Reviews
$91.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1985-1985 Chevrolet Citation, 1985-1985 Chevrolet Citation II, 1984-1984 Chevrolet Citation, 1984-1984 Chevrolet Citation II, 1984-1984 Pontiac Phoenix, 1983-1985 Buick Century, 1983-1984 Oldsmobile Omega, 1983-1983 Chevrolet Citation, 1983-1983 Pontiac Phoenix, 1982-1985 Buick Skylark, 1982-1985 Chevrolet Celebrity, 1982-1985 Oldsmobile Cutlass Ciera, 1982-1985 Pontiac 6000, 1982-1982 Chevrolet Citation, 1982-1982 Oldsmobile Omega, 1982-1982 Pontiac Phoenix
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick Skylark
Item LocatedUnited States
Quantity1
Part interchange
FG02K, 4017076, 25090066, FG02K, 692075, TNKFG02K, SU99, 25003149
item #1000Z1WY
Show less
SOLD
OUTSpectra PremiumPart # FG88D
Spectra Premium FG88D Fuel Tank Sending Unit
4.617 Reviews
$64.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1967-1967 Buick Skylark, 1967-1967 Buick Skylark, 1967-1967 Buick Skylark, 1967-1967 Buick Special, 1967-1967 Buick Special, 1967-1967 Buick Special, 1967-1967 Buick Special, 1967-1967 Buick Special, 1967-1967 Buick Special, 1967-1967 Buick Special, 1967-1967 Chevrolet Chevelle, 1967-1967 Chevrolet Chevelle, 1967-1967 Chevrolet Chevelle, 1967-1967 Chevrolet Chevelle, 1967-1967 Chevrolet Malibu, 1967-1967 Chevrolet Malibu, 1966-1967 Buick Skylark, 1966-1967 Buick Skylark, 1966-1967 Buick Skylark, 1966-1967 Buick Skylark
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick Skylark
Item LocatedUnited States
Quantity1
Part interchange
FG88D, 692234, TNKFG88D, 4017318, E4060A, FG88D
item #1000YXKU
Show less
Bad fuel sending unit symptoms
- Inaccurate fuel gauge: The fuel gauge doesn't reflect the actual fuel level accurately.
- Fluctuating fuel gauge: The gauge shows sudden, irregular fluctuations.
- Stuck fuel gauge: It remains stuck at a full or empty reading.
- Fuel warning light: The low fuel warning light may illuminate even with enough fuel.
- Difficulty starting: Starting the vehicle can be challenging, especially if the gauge is unreliable.
- Misjudging fuel consumption: Problems with fuel economy calculations may occur.
- Running out of fuel: Drivers may unexpectedly run out of fuel due to inaccurate readings.
- Noisy fuel pump: Unusual noises from the fuel pump can be a sign of a faulty sending unit.
Fuel sending unit vs fuel pump
1. Fuel sending unit
A fuel sending unit measures and reports the fuel level in the vehicle's tank to the driver via the fuel gauge on the dashboard. It contains a float and a variable resistor and is located inside the fuel tank. Maintenance typically involves addressing fuel gauge accuracy.
2. Fuel pump
A fuel pump's primary function is to deliver fuel from the tank to the engine for combustion. It pressurizes and circulates fuel through the system, ensuring the engine receives the necessary fuel. The pump has an electric motor and is often located inside the fuel tank. Maintenance is crucial to ensure proper fuel delivery and engine performance.