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Vans & Minivans GMC Safari & Chevy Astro GMC Safari/Chevy Astro Real World MPG
52 messages, Last post on Mar 05, 2009 at 9:07 PM
You are in the GMC Safari & Chevy Astro Forum. Your Host is Karens
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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. Thanks, Julio. 
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Replying to: redfisher (Dec 31, 2007 6:50 am) Spark Plug wires Sparks Air Filter Fuel Filter 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. Regards. |
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Replying to: jouls (Jul 16, 2008 5:05 pm)
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Replying to: cob (Jul 16, 2008 5:33 pm) 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! 
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How much you think will cost to rebuilt the transmission? Is it worthed? Thanks for your reply.
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Replying to: jouls (Jul 17, 2008 3:27 pm) 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. .
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Replying to: spike99 (Jul 17, 2008 5:36 pm) and will see if I decide to sell or fix this vehicle. Have a nice day. |
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Replying to: jouls (Jul 17, 2008 3:27 pm)
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Replying to: cob (Jul 24, 2008 6:45 am) I do not trust in any repair shop near by plus I velieve is not worth for me to spend as you said $2000 usd. I'll rather get some money and use it to get a newer car. BR.
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Replying to: jouls (Jul 24, 2008 4:19 pm) Just wondering if you knew about flushing the transfer case? My 99 Safari was hard shifting after a 2 hr highway drive, and we got the transfer case flushed and it fixed it. There is some known issue with it that came out in a GMC bulletin. Most people assume it's the transmission, but it's not.
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