Last post on Mar 05, 2009 at 9:07 PM
You are in the GMC Safari & Chevy Astro
What is this discussion about?
GMC Safari, Chevrolet Astro, Van
#28 of 52 Re: [antique_maggie]
Jul 07, 2008 (8:39 pm)
We have a 2001 AWD Safari van. Based on its DIC (Display Information Center), it gets between 8-14 mpg while towing a 4,000 lbs Travel Trailer, 14-22 mpg while hauling a family of 5 with minor internal cargo and with internal light cargo with 2 adults, our van gets a consistant gets 22-25 mpg. If wondering, my van has 3.42 gearing and it did have P215/75R/15 rubber tires (which is factory size). We got new P215/70R/15 rubber tires (which are smaller / lighter tires) installed a few days ago and our van with family of 5 is now more consistantly in the 23-25 mpg range. Especially at 60 mph ground speed. Above 60 mph and its GMC letters instantly turn to "PIG" (if you know what I mean).. For us, we only do an 8 hour long trip 3 times per year. Thus, we keep its ground speed under 60 mph, and we eventually get there. Works for my family's needs and available time.
If time or faster ground speed is more urgent to you, perhaps it might we less expensive to "rent" a smaller mini-van, mini-station wagon or rent the car of your dreams - for your long term trips. The "gasoline cost savings" by using a more fuel efficient rental could pay for the daily vehilce rental fees. And, you get to try a different vehicle for long distance travel. Great research opportinity for your future van replacement - when that special time comes. If wondering, my FIL (Father In Law) does that. He keeps his GAS HOG V8 4x4 GMC pickup for local driving and rents a fuel efficient vehicle for his long trips. Works for him....
Hope this idea helps as well....
Jul 08, 2008 (10:59 am)
Thanks again! So far I've been told to check the oxygen censor and to see if the computer is in "Stupid mode" (lol), and to be honest, the van could use some newer tires. I'll keep that tire size you gave me in mind when I shop around for new ones. I hope it helps me! :0)
P.S~ Would it help out any if I got it in for an alignment? It's off....not real badly, but enough to tell......
#30 of 52 Re: [antique_maggie]
Jul 08, 2008 (3:27 pm)
They say that every "little bit" helps.
- Closer to the ground means less wind drag. If you have a raised van, do lower it back down to factory ground clearance.
- New shocks on all 4 tires (like Blistien or Rachos HD shocks) to reduce too much up/down movement help a little as well. Especially if pulling a trailer.
- Smaller / lighter tires means less rubber weight to "get going". Especially if the axle gearing of your van already has "lugging" behavior. Lugging because its gearing is too high - for your road / hill conditions.
- Pull away "slowly" from the stop lights / stop signs. Let others "wind vacum" your vehicle forward. LOL!.
- Being slow on those hiway access ramps (like the big loop clover leafs). Today, I no longer bank my van on 2 wheels. Especially on those tighter clover leafs.
- Less internal weight (like removing unneeded row of passender seats - until needed). My buddy removed his middle row of seats for his dogs. When he does passenger trips, he & his son re-installs his middle seat. Works for him.
- Using cruise control and set to -3 mph slower then posted speed limit. Same speed as most transport trucks - in my local area.
- Only use AC when needed. re: The high climate justifies the gas consumption of AC. No more running AC because one can.
- Wheel aligment / wheel balance.
- Ensure vehicle has good spark plugs, clean air filter, its thottle body is clean, its injectors are clean, its timing is properly set, etc. etc. Mechanical tune ups do save gas dollars in the long run...
- Proper tire pressue (as stated on the tire and not in your manual) helps as well. Note: Tire pressure is based on towing and non-towing loads. One lbs rating doesn't fit all brands of tires. Therefore, be prepared to adjust some tires - based on their usage.
As they say, every little bit helps.
#31 of 52 P1870 CODE Plus MPG very low
Jul 16, 2008 (5:05 pm)
Hello, I have a GMC Safari van SLT Yr200.
I was traveling to Alabama and I have the transmission making a shift very rare I have stop at the moment check the Trans oil and I tough it was ok, but next mile it did the same so I stop at walmart and I have added some oil.Service Engine came on and MPG started to go from 19 to 18 and so on until 14.8.
When I came back home I took it to Advance auto partsand they get the P1870 code " Transmission Slip" they have recomended Lucas product Stop Slip also an oil change.
Should I change Transmission Filter and O ring? and add Lucas product?
What else other than engine oil change, air filter, fuel injector cleaning can help to improve MPG?
I'll appreciate any one can help me, I have this van from original owner and never gave me a problem.
#32 of 52 Re: Fuel mileage [redfisher]
Jul 16, 2008 (5:24 pm)
I was having 17.8 and I have replace the following things;
Spark Plug wires
I have make an oil change and replace oil filter
I have flush the transmission oil and replaced.
I added a fuel injector cleaner.
Guess what, I have increased to 25 MPG when I travel from GA to VA.
But After almost 1.5 years after and continusly changing engine oil and filter I have a transmission problem that I have posted recently and I have bad MPG.
I'm just hoping that some body can help me too.
#33 of 52 Re: P1870 CODE Plus MPG very low [jouls]
Jul 16, 2008 (5:33 pm)
P1870 is usually the death code so you can plan on a rebuild soon or sell it ASAP.
#34 of 52 Re: P1870 CODE Plus MPG very low [cob]
Jul 17, 2008 (5:40 am)
oh jeez! not that! how awful!
I hope you get that van fixed soon! I've given up hope on my astro and will be trying to sell it soon....I loved that van, it was SO much roomier than your standard minivan and it hauled alot of things, but I've lost the battle with gas prices and can't take it anymore, I'm sad to admit, I'll be looking for a small sedan soon.....curses!
Jul 17, 2008 (3:27 pm)
How much you think will cost to rebuilt the transmission?
Is it worthed?
Thanks for your reply.
#36 of 52 Re: P1870 [jouls]
Jul 17, 2008 (5:36 pm)
A few years back, I got the transmisison rebuilt in my 2001 AWD Safari van. Before taxes, it cost $1,200 - canadian dollars. Not too sure how much they charge in your specific region. Might be worth calling a few tranny shops in your area. If wondering, my van lost 2nd and "R" gears. It only has 1st and 3rd. Thus, completed removal and rebuild - with a special kit. Your Astro/Safari van may need the same kit.
If my GMC Safari van "blew up" tomorrow, I'd probably get a 2007 "demo" Uplander Van. This year has the bigger front brakes, larger size engine and a few other design improvements the other previous GM van models don't have. Demo is around $18K - compared to the $30K of a 2008 models. If I neeed to haul stuff, I'd connect my larger size engine "smaller" mini-van to my 6x10 or 4x6 utility trailer. And when not needed, I'd simply back the trailer into the bush and pull its pin (sort of speaking). Thus, no need for a larger size mini-van (that's a pig on gas).
Hope this helps - some how.
#37 of 52 Re: P1870 [spike99]
Jul 18, 2008 (7:27 pm)
Thanks for the info Spike99, I'll try to do everything on my side.
and will see if I decide to sell or fix this vehicle.
Have a nice day.