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Discussion Starter · #1 ·
Hey everyone! I have a 19 4WD diesel and have been thinking about buying the titan fuel replacement tank that will up my capacity from the stock 21 gal to 36 gal. My question is do you know if you can calibrate the dash for the new tank so you can get accurate range estimation/fuel level indicators etc. Iv seen on some other trucks (ford I believe) where a customer simply went into their options menu on their touchscreen and could scroll down and pick the new capacity tank. Don’t think Chevy has this option.
 

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Hey everyone! I have a 19 4WD diesel and have been thinking about buying the titan fuel replacement tank that will up my capacity from the stock 21 gal to 36 gal. My question is do you know if you can calibrate the dash for the new tank so you can get accurate range estimation/fuel level indicators etc. Iv seen on some other trucks (ford I believe) where a customer simply went into their options menu on their touchscreen and could scroll down and pick the new capacity tank. Don’t think Chevy has this option.
First off, your truck has to be a CCLB, I'm not sure on a ECLB, to accommodate the Titan tank. I can tell you that the DIC can be altered to account for the extra fuel onboard but only through an aftermarket tune. Unfortunately GM did not set up the dash for us to be able to adjust the fuel amount onboard ourselves. That computation is done in the ECU which is why you need to have a tuner to make that change.
 

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Discussion Starter · #3 ·
Yeah I have the CCLB so I know it will fit. Wondering if the service department could tune it seeing as how I’m not adjusting the engine at all so there’s no emissions/running issues here in California. Thanks for the info
 

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Yeah I have the CCLB so I know it will fit. Wondering if the service department could tune it seeing as how I’m not adjusting the engine at all so there’s no emissions/running issues here in California. Thanks for the info
That's a really good question, if you find out can you lets us know. I know GDE can do it because they did it for me.

Good luck
 

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Discussion Starter · #6 ·
That's a really good question, if you find out can you lets us know. I know GDE can do it because they did it for me.

Good luck
So I spoke with a Chevy service dept. they state that altering the fuel tank capacity is considered (possibly just here is California) as altering the emissions! That makes NO sense at all but knowing how gestapo like California is with its emissions/smog regulations I suspect they would find a way for that to be considered a reason not to let it pass inspection.
 

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So I spoke with a Chevy service dept. they state that altering the fuel tank capacity is considered (possibly just here is California) as altering the emissions! That makes NO sense at all but knowing how gestapo like California is with its emissions/smog regulations I suspect they would find a way for that to be considered a reason not to let it pass inspection.
I have had my Titan fuel tank for about 3 years now in Ca never had a problem when I take get smog I also have a tune from durmaxtuner but they where not able to calibrate my cluster had asked them few years back not sure if they can do it now
 

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Discussion Starter · #8 ·
I have had my Titan fuel tank for about 3 years now in Ca never had a problem when I take get smog I also have a tune from durmaxtuner but they where not able to calibrate my cluster had asked them few years back not sure if they can do it now
So you installed the bigger fuel tank and just guesstimated range/fuel level?
 

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So you installed the bigger fuel tank and just guesstimated range/fuel level?
Never really tried and calculated but pretty sure it does 1k + on a full tank easy I was working in Sacramento for a week was driving back-and-forth and one way is like 95 miles didn’t have to fill up the whole week but I usually fill up on half a tank or a quarter don’t really let it get that low with these diesel prices right now
 

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Discussion Starter · #10 ·
Never really tried and calculated but pretty sure it does 1k + on a full tank easy I was working in Sacramento for a week was driving back-and-forth and one way is like 95 miles didn’t have to fill up the whole week but I usually fill up on half a tank or a quarter don’t really let it get that low with these diesel prices right now
Does the fuel gauge work the same? This may be a dumb question, I’m just wondering if the reading of half a tank equals you adding roughly 17-18 gal at the pump, if the gauge is accurate I don’t care or need an accurate fuel range estimation on the info screen
 

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Does the fuel gauge work the same? This may be a dumb question, I’m just wondering if the reading of half a tank equals you adding roughly 17-18 gal at the pump, if the gauge is accurate I don’t care or need an accurate fuel range estimation on the info screen
Yea works normal just stays in the 500 till empty range till it actually gets there then starts working normally
 

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Discussion Starter · #12 ·
Yea works normal just stays in the 500 till empty range till it actually gets there then starts working normally
Sounds good, I may just get it and not bother with trying to recalibrate the dash, especially if it will cause registration renewal for some odd bloody reason with this state
 

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Does the fuel gauge work the same? This may be a dumb question, I’m just wondering if the reading of half a tank equals you adding roughly 17-18 gal at the pump, if the gauge is accurate I don’t care or need an accurate fuel range estimation on the info screen
Yes the fuel gauge still works fine without the tune.
 
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