fuel tank filling capacities

ok ya thats what i ended up doing was looking at the owners manual i got a new sending unit in it didn't really see anything abnormal when i dropped the tank was acutally kind of aggervating so i dont think it has ever been out or its been a long time if so lol

i have a 17 gallon tank on my 86 ext cab
and can get more than 400 miles out of it

Sending unit in gas tank of B2200/2000 is a slider on a rod. After years of use,they wear out and gas gauge is really inaccurate.U can take gauge out,clean the rod and be sure slider fits as it should.Otherwise,dont trust the gauge.bj

I ran mine as low as I ever have before and when I filled it up I put 12.4 gallons in it. I thought the tank was 12 gallons so I was surprised I went over 12. When I fill it up, the gauge only shows 3/4 of a tank then drops down to around a little less than a half. After I drive it 100 miles it goes back to just under 3/4 of a tank. I set the trip odometer every time I fill up and am able to get 260-270 miles until I need to fill up. That's running the A/C. I know my sending unit is probably junk but for now and until I find time to drop the tank, it works for me.

I think someone already answered this, but reg cab trucks hold 12 gallons,ext cab nearly 15.When I fill my reg cab up,the gauge creeps up to the full mark,then drops like a rock to 1/2 tank.The last 1/2 tank it creeps slowly towards empty.Again, old worn out slider.I feel lucky to get 20 mpg around town-does alittle better on the road.another tank issue to be wary of: Had 2600i ext cab and over time,gravel had built up around lip og tank near frame.ended up wearing a hole in the tank.Found one in a j-yard,put it on,but the internal baffle was in the wrong place and every time I accelerated,truck died due to fuel starvation with less than a full tank..be careful to use the right tank when u replace.bj

ok thanks guys for the input on it ive been driving it around just getting about 130 miles out a tank need to just stick a gas can in the back and drive it till it runs out i guess anybody heard of having to like adjust the new sensor that goes in the tank or bending the rod maybe why it wouldn't read quite right?? i know it works off resistance reading so wonder if it had to be set or rod bent with it reading a certain resistance with it all the way up or down not sure??

New sensor should be ok.Sometimes u can fix a worn out sender by cleaning it well and bending old sensor/slider in till it makes good contact.bj