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Chevy Express/GMC Savana Fuel & Oil Questions

21 messages,  Last post on Aug 20, 2010 at 6:46 PM

You are in the Chevy Express & GMC Savana Forum.

What is this discussion about? Chevrolet Express, GMC Savana, GMC Savana Cargo, Van

Messages Page 3 of 3

#12 of 21 Re: '97 chevy express fuel problem [kyro_1234] by motto1979

Jun 14, 2008 (7:44 am)

Replying to: kyro_1234 (Feb 28, 2008 10:33 am)
I'm having the same problem with my 2002 3500 gmc 5.7 replaced the fuel pump and filter and it ran fine for a month now same problem did you figure yours out am i missing something, thanks

#13 of 21 Gas tank capacity by tireman9

Nov 09, 2008 (10:20 am)

I have a 2007 3500 cut-away chassis as the foundation for my Coachmen motorhome. The literature says I have a 35 gal tank. On my last trip I wanted to get very empty to save on gas as I have discount at local station, also wanted to see how much I had when gauge reads E.
I was between the last small mark and the E. I filed up and it would only take 28.3 gal so either I really have a 30 gal tank or the gauge is way off.
Ideas?

#14 of 21 by 1320jon

Nov 11, 2008 (9:12 am)

Chances are its off. Im not sure, but did you get the low fuel light to come on? I havnt seen any newer car or truck not have a low fuel light in years, although Im unsure if our vans have them, as I havnt seen mine.
 
If you inspect the dash cluster carefully, with a small flashlight you might see the icon for low fuel. That would idicate that you probably do have a 35 gallon tank if you didnt have it on when you filled up.
 
My dodge ram 3500 is similar. It holds 35 gallons, but when its on E, and I mean on it, it still have about 7 gallons left. The most I ever put in it was 28 gallons, and I was afraid I was gonna run out for miles and niles towing a large trailer.

#15 of 21 smell gas by mugster64

Nov 16, 2008 (12:00 pm)

I have a 2001 express with a v-6 4.3 i think.I am getting a code of P0440.I was told that it is a fuel recovery leak..I have a new gas cap but that didnt fix the problem...i am smelling gas to..The fuel pump was replaced after the engine light went on indicating this code...the van is a conversion van with body molding and plastic running boards also...Please help>>>

#16 of 21 by 1320jon

Nov 17, 2008 (1:45 am)

two things...
 
Fuel level.....I noticed that in the owners manual it says you have some left when it reads "E".
 
Second, the fuel recovery could be a solinoid/valve on the engine and not the gas cap. The tank has a line that runs up to the intake. I dont know where on the the 4.3, but on the the 5.3 its on top of the intake at the front. The pcm pulses the solinoid to put the gas vapor in the engine (for emmissions) after it warms up a bit. Its not uncomin for the platic to break or crack, or the plastic line to it. It is possible to cap the lines and the vacuum leak with no ill effects to how it runs. It will have the code unless deleted via laptop retuning of the pcm and may not pass smog testing depending on were you are at. If the code is deleted, it passes no matter what, but is not good for the enviroment.
 
The solinoid could just be dead or stuck also. Most of the ones Ive seen are 1 inch by two inches long, with two wires run to it.

#17 of 21 Re: [1320jon] by tchains

Jun 15, 2009 (2:05 pm)

Replying to: 1320jon (Nov 17, 2008 1:45 am)
Hi guys, hoping you can help with a couple questions. I was wondering how easy it is to replace the oil filter on the Chevy Express/GMC Savana. Does the van need to be lifted at all or is there enough clearance to do it with it just sitting on the driveway? I presume the oil filter is accessible from the bottom. TIA

#18 of 21 2000 Chevy Express Fuel Pump by coesterly

Nov 05, 2009 (6:34 pm)

Does anyone know exactly how to replace the fuel pump on a 2000 Chevy Express?
 
Does the owner's manual have directions?
 
thanks

#19 of 21 gm express van power steering pump problem by evita1

Dec 29, 2009 (7:43 pm)

I have an 2005 express cargo van. At about 40,000 miles, it developed a winding noise which appears to be coming from the power steering. I was not notified to change the power steering fluid, nor is it in the owners manual. Upon investigating, I've noticed that the power steering fluid appears to have been overheating. Does anyone know of this problem and how to solve it?

#20 of 21 1998 Savanah 6.5litre turbo by romaurie

Aug 15, 2010 (10:16 pm)

The van is doing half the minimum mpg.About 7mpg. Garage says the vacuum pump is the cause and are replacing it.
I am a refrigeration/air conditioning engineer but until now was not aware there was a vac pump on these vehicles.They say it controls the air conditioning and fuel system runs continuously with the engine.
Just basically, how does it control the A/C and fuel?
I imagine the fuel is made to evaporate more efficiently but the A/C has its own circulating compressor for the R134a gas used.
I am a British engineer working in Eilat.I have no experience with these very popular vehicles so I would like to learn more.
Romaurie

#21 of 21 vacuum pump replacement on GMC Savanah by romaurie

Aug 20, 2010 (6:46 pm)

The replacement vac-pump ha improved fuel economy and the A/C flow.It also seems to have improved the auto gear changing.

Messages Page 3 of 3

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