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GMC Safari/Chevy Astro Real World MPG

52 messages,  Last post on Mar 05, 2009 at 9:07 PM

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What is this discussion about? GMC Safari, Chevrolet Astro, Van

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#38 of 52 Re: P1870 [jouls] by cob Jul 24, 2008 (6:45 am)
Replying to: jouls (Jul 17, 2008 3:27 pm) I had my 97 AWD trans rebuilt in 2005 for just over $2000 and that was 50,000 miles ago. I have since sold it with the camper we towed behind it and the new owner is still driving it with over 130,000 miles on it. After the rebuild it shifted smooth into each gear and never missed a beat. Make sure you use a reputable repair shop and don't get a remanufactured GM unit make sure they rebuild yours with the upgraded aftermarket parts. The GM reman will be no better than the original trans that failed. Replies to this message: jouls (Jul 24, 2008 4:19 pm) greensafari (Jul 25, 2008 7:09 pm) jouls (Jul 27, 2008 8:57 am)
#39 of 52 Re: P1870 [cob] by jouls Jul 24, 2008 (4:19 pm)
Replying to: cob (Jul 24, 2008 6:45 am) COB...I just decided to put the vehicle for sale.   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. Replies to this message: greensafari (Jul 25, 2008 7:09 pm) jouls (Jul 27, 2008 8:57 am)
#40 of 52 Re: P1870 [jouls] by greensafari Jul 25, 2008 (7:09 pm)
Replying to: jouls (Jul 24, 2008 4:19 pm) hi 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. Replies to this message: jouls (Jul 27, 2008 8:57 am)
#41 of 52 25 MPG! by organfreak Jul 27, 2008 (8:49 am)
Just got this '97 Astro, 2 WD. Finished a 400 mile trip with about 600 lbs of cargo in the back. 25.3 MPG 60-70 MPH!!! Wow! Replies to this message: guyonearth (Aug 05, 2008 7:20 pm) organfreak (Aug 12, 2008 7:22 am)
#42 of 52 Re: P1870 [greensafari] by jouls Jul 27, 2008 (8:57 am)
Replying to: greensafari (Jul 25, 2008 7:09 pm) Hi GreenSafari,   Where is the transfer case located? is that the rear axle thing?   before I made that trip, I took the van to get the seals and bearings replaced on the rear axle, they actually remove and replace the oil.   Thanks.
#43 of 52 Re: 25 MPG! [organfreak] by guyonearth Aug 05, 2008 (7:20 pm)
Replying to: organfreak (Jul 27, 2008 8:49 am) I'd like to know what method you used to calculate this mileage, since it is about 30% too high. I've owned 3 of these vans and never got close to that. Replies to this message: organfreak (Aug 12, 2008 7:22 am)
#44 of 52 Re: Poor fuel economy [adcessories] by guyonearth Aug 05, 2008 (7:24 pm)
Replying to: adcessories (Jul 12, 2007 8:22 am) What are you burning? E-85? If so, that mileage is probably correct. Otherwise, do you have alot of weight in this thing?
#45 of 52 Re: gmc safari [partyd] by guyonearth Aug 05, 2008 (7:27 pm)
Replying to: partyd (Feb 21, 2008 3:24 pm) Where did you get a 5 speed automatic? They only have 4 speeds. (4L60E) Replies to this message: partyd (Mar 05, 2009 9:07 pm)
#46 of 52 Re: 2002 Poor Fuel Economy/Performance [lahainaohana] by guyonearth Aug 05, 2008 (7:32 pm)
Replying to: lahainaohana (Mar 06, 2008 8:57 pm) There are two knock sensors usually, one at the rear of the right head, one at the side of the left head, round objects about 2" in diameter that screw in. It is possible your distributor gear is worn out, throwing your timing off. The glowing exhaust IS NOT NORMAL. You need to find out if this is a result of timing problems or if your converter is plugged. If it is, replace it ASAP. If you don't, you will melt out the core, plug your exhaust, and risk burning exhaust valves out, which will be very expensive.
#47 of 52 Re: P1870 CODE Plus MPG very low [jouls] by guyonearth Aug 05, 2008 (7:38 pm)
Replying to: jouls (Jul 16, 2008 5:05 pm) 1870 codes are often caused by faulty valve bodies and can be fixed fairly easily. Of course most shops will say you need a rebuild, that is how they make their money. The 4L60E transmission used in these vans is very tough and rated for much more power than they have. With maintainance, They should easily last 250K or more. Replies to this message: jouls (Aug 07, 2008 3:45 pm)

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