2001 G3500 Chev Van

[Ted1207]

There are (2) 15 pass. vans being sold at the GSA auction in New Mexico in a couple of weeks. They are listed as bi-fuel. Does anyone have any idea how big the CNG tank(s) might be? I know of a 1997 Ford van only had a very small tank. Thanks. Great forum!!

[Matt Hopkins]

Re: 2001 G3500 Chev Van

Did you buy one? I am looking to buy one on the east coast next week and have tons of questions and am hoping to connect with others who have bought them. Anyone out there driving 2001 chevy dual fuel vans?

[NGXV]

Re: 2001 G3500 Chev Van

I drove a 2001 chevy express g3500 for several weeks. The most I got was 114 miles with a good fill. This was mostly highway miles @ 75 MPH, with some combined driving. You would do better if you did not exceed 64 MPH with mostly highway. Seems like I remember it holding about 8-9 gallons. The vans are rated at 16 MPG at fuel economy.gov. Get the E350 if you are only going to haul people, and the G3500 if you want to haul people + tow stuff.

PM me if you are interested in a red 01 g3500 express 15 passanger with 34K miles PW, PL, Cruise

[Matt Hopkins]

Re: 2001 G3500 Chev Van

I did buy one (but mine is a 12 passenger) and I am having a hard time figuring out what the capacity should be. The tanks are listed on the tag on under the hood (over the fan/radiator) as having a water capacity of 121 liters/32 gallons. I have gotten no more than 7.4 gge's into them when they are empty. This seems way off to me. Anyone know what the water capacity to gge conversion is?

[Lakewood90712]

Re: 2001 G3500 Chev Van

A 100L tank at 70 deg. f. and 3600 psi will hold 8gge. This is under lab conditions and with a slow fill from 0 psig. 121L is about 10gge, again ,under perfect lab. conditions.

7.4 with a fast fill sounds about normal if the tank is rated at about 9.5-10gge.


When you say empty, is that 0 psi in the tank ?, or when the van switches to gasoline, or will not start on cng ? Many bi/fuel vehicles switch to gasoline before the cng is completely empty. Some will not let you start in cng mode unless it "thinks" you have at least 1/4 full cng tank.

[Matt Hopkins]

Re: 2001 G3500 Chev Van

Why are fast fills any different from slow fills?

[Highmarker]

Re: 2001 G3500 Chev Van

Why are fast fills any different from slow fills?

Matt,

The answer is temperature. As you fast fill, your tank heats up rapidly. If you slow fill, your tank is allowed to cool as it fills, thus your tank does not heat up. Natural gas is greatly effected by temperature (Gas Law PV=RT).

[Luke]

Re: 2001 G3500 Chev Van

I have the 2002 Chevy/GMC G-Gan bifuel CNG supplement & the alternative fuels addendum to the owner's manual. They both list the total GGE capacity of the tank system (pair located behind rear axle) as 9.3 @ 3600 PSI. There is a table on page 6-9 of the service manual that provides a table of temperature vs percent full (see attached file).

[Lakewood90712]

Re: 2001 G3500 Chev Van

Great info CNGutah.

Looks like 100% at 3600 psi is close to 80 deg. f (3686 psig at 84deg. f.). I always assumed it was at 70 degres.

[Jfredmuggs]

Re: 2001 G3500 Chev Van

I have the 2002 Chevy/GMC G-Gan bifuel CNG supplement & the alternative fuels addendum to the owner's manual. They both list the total GGE capacity of the tank system (pair located behind rear axle) as 9.3 @ 3600 PSI. There is a table on page 6-9 of the service manual that provides a table of temperature vs percent full (see attached file).

Luke, do you have any more docs on the Express?

[minimade]

2001/2002 G3500 Chev Van GSA Auction

GSA sold about 10 2001/2002 G2500/3500 dual fuel vans today. They sold for $4700 to 7000 or so.....35000-70000 miles. Sale was in Belair , Md.

I got a cargo G2500 at the low $$ range . Several had p/w, and P/l.

Prices have really dropped....upgrade yoour fleet now.

Did anyone on list get the C2500 dual fuel p/u at Ft Meade last week?.....Gov Liquidation.com

We are now running 2 G25/3500 vans, 2 c2500 pus, a GX, and an non-running expedition, and a D2500 van with expired tanks if anyone needs parts.

Derek