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#1
07-20-2005, 08:53 AM
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Transmission surging problems?
My 99 Blazer will occassionally surge when it shifts gears, I really dont think its surging more like the computer? is not shifting it into gear totally. Its an automatic with only 70000 miles on it. The fluid is just fine and there doesnt seem to be any other issues besides it. It does this when its warm or cold. Could this be a the solenoid? or do I need to replace the transmission? Any help would be greatly appreciated.
Thanks 
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#2
07-20-2005, 05:06 PM
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Re: Transmission surging problems?
When was the last time you changed your transmission fluid and filter, Dirty fluid and filter will give you Surge/ Shifting problems...
__________________
1998 BLAZER LS Vin-W 4Dr 2wd 2004 Cavalier LS 4Dr 2.2 Ecotec "Good Part's ain't Cheap--Cheap Parts ain't Good" 
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#3
07-20-2005, 08:47 PM
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as much as I hate to say I have no idea... I bought it used with approx 67000 miles on it. The fluid looks/smells fine but I guess it wouldnt hurt. Should i have them completely flush it also?
Would that be the cause though if only does it once in a great while. It appears to be only happening from the shift from 1st to 2nd (start from light and then when it shifts the first time). I always drive it in Overdrive also. btw this is a 99 Blazer LS 4x4 thanks again
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#4
07-20-2005, 09:38 PM
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Re: Transmission surging problems?
Is the ses light on, are there any codes in the computer?
__________________
1998 BLAZER LS Vin-W 4Dr 2wd 2004 Cavalier LS 4Dr 2.2 Ecotec "Good Part's ain't Cheap--Cheap Parts ain't Good"
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#5
07-20-2005, 09:44 PM
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Re: Transmission surging problems?
Thugmebaby....
try typing in "transmission solenoid" in the search box.......
__________________
1998 BLAZER LS Vin-W 4Dr 2wd 2004 Cavalier LS 4Dr 2.2 Ecotec "Good Part's ain't Cheap--Cheap Parts ain't Good"
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#6
07-21-2005, 11:46 AM
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Re: Transmission surging problems?
It could be the pressure control solenoid or any of good number of other things. If you don't have any way to test the function of the solenoid, you could gamble the price of a new one that it is bad to see if that fixes your problem (they're fairly easy to remove and replace), but since the process normally involved changing your fluid (some of it anyway) and filter, I'd do that first and see if that helps. As far as the whole professional flush thing, I'm not sure it's worth the money. You can get about half or more of your fluid out by driving the truck up on ramps and just removing the pan. In my opinion, that's probably enough fresh fluid to halt any of the poor performance issues that old fluid might cause. The real benefit comes from changing out a potentially clogged filter, which some flush guys may not even do for you. Just be sure you install a new metal-clad seal into the hole that the filter fits up into and clean off your pan magnet real good. Best of luck!
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#7
07-21-2005, 08:53 PM
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The SES light has never came on. I have a computer scanner that can tell me any past codes and it came up clean.
As for the transmission solenoid I will look that up as I have no idea how to change it nor where it even is....either way thanks for all the input and ideas.
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