Grand Prix GT Gas Tank / Milage

[smetzler]

What is the size of the gas tank on the 2003 Grand Prix GT. I'm sure its in the manual, but I just can't find it.

Also, anybody have an idea what kind of gas mileage I can expect. I do mostly home to work and back driving (not much highway).

Thanks

Shawn

[BNaylor]

Originally Posted by smetzler

What is the size of the gas tank on the 2003 Grand Prix GT. I'm sure its in the manual, but I just can't find it.

Also, anybody have an idea what kind of gas mileage I can expect. I do mostly home to work and back driving (not much highway).

Thanks

Shawn

Fuel capacity = 18.0 gal.









Thrasher CAI, DHP v1.0 PCM, SLP Headers,
3.25 SC pulley, CAIT GMAF, 2.5 DP/Hi-Flow CAT,
u-bend delete, 160 TS, ZZP Stage 1 72mm TB,
TB spacer, MSD 8.5mm wires, Autolite 103,
Goodyear Gatorback Serp. & SC Belt,
Nitto NT555R Drag Radials
1/4 ET: 13.210 sec. @ 104.490 mph
0 - 60 ft: 1.945 sec.

[jimmyv-21]

i get 18-20 in town on my 01 gt...sometimes...when not wearing the lead boot heheh....

[andylikespez]

[quote=bnaylor3400]Fuel capacity = 18.0 gal.


is it really 18, i was wondering the same thing, i own a 2000 se with the 3.1 and the low fuel light comes on and it takes 13 gallons to fill from that point, 5 gallons seems like a big reserve or something. or i have no idea what im talking about.

[BNaylor]

[quote=andylikespez]

Originally Posted by bnaylor3400

Fuel capacity = 18.0 gal.


is it really 18, i was wondering the same thing, i own a 2000 se with the 3.1 and the low fuel light comes on and it takes 13 gallons to fill from that point, 5 gallons seems like a big reserve or something. or i have no idea what im talking about.

It's 18 gal. or 68 liters (17.952 gal.) for 2000 models too. You may have a fuel gauge out of calibration or the fuel level sensor in the gas tank is off.









Thrasher CAI, DHP v1.0 PCM, SLP Headers,
3.25 SC pulley, CAIT GMAF, 2.5 DP/Hi-Flow CAT,
u-bend delete, 160 TS, ZZP Stage 1 72mm TB,
TB spacer, MSD 8.5mm wires, Autolite 103,
Goodyear Gatorback Serp. & SC Belt,
Nitto NT555R Drag Radials
1/4 ET: 13.210 sec. @ 104.490 mph
0 - 60 ft: 1.945 sec.

[Langning]

For my 2001 GT, it is 17.5-gal tank and I usually refuel every 380-390 miles avg about 25-26 mpg (2/3 hw@75mph)

[richtazz]

I get about 21-22 around town and better than 31 on the highway with my 99 GT 3800 N/A.

[its840]

the low level light comes on at right about 4 gal left. mu 99 gtp has a 18 gal tank and i average 26mpg 50/50 city/highway

[smetzler]

Thanks to all who replied. I appreciate it.