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Gm transmission question
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bobkyllo View Drop Down
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Joined: 14 Sep 2009
Location: minnesota
Points: 1557 		Post Options Post Options   Thanks (0) Thanks(0)   Quote bobkyllo Quote  Post ReplyReply Direct Link To This Post Topic: Gm transmission question
    Posted: 05 Feb 2019 at 2:44am
Hey guys I swapped transmissions in my two Chevy pickups. I took the transmission from my 2000 k2500 and put it in my 1997 Chevy k2500.

The 97 is a snow plow truck. I've noticed while plowing snow that she times while shifting from reverse to forward that the transmission has to think a little bit before engaging. Once it engages it's in. I don't think it's slipping. But it does not do this all the time. There are times this works flawlessly and then next time it gets it in its head to do this extra thinking.

Might I have a bad transmission range sensor in the side of the transmission
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Tbone95 View Drop Down
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Joined: 31 Aug 2012
Location: Michigan
Points: 12150 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tbone95 Quote  Post ReplyReply Direct Link To This Post Posted: 05 Feb 2019 at 7:34am
Assuming you rechecked the fluid level? 
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steve(ill) View Drop Down
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Joined: 11 Sep 2009
Location: illinois
Points: 87563 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 05 Feb 2019 at 8:53am
probably dirty oil sticking one of the valves... Drain and flush MIGHT help.. CLEAN fluid is always an advantage.
Like them all, but love the "B"s.
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tadams(OH) View Drop Down
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Joined: 17 Sep 2009
Location: Jeromesville, O
Points: 10857 		Post Options Post Options   Thanks (0) Thanks(0)   Quote tadams(OH) Quote  Post ReplyReply Direct Link To This Post Posted: 05 Feb 2019 at 1:57pm
If Shameless would back off that machine of his them GMC would work ok cause they wouldn't be needed as much
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jaybmiller View Drop Down
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Joined: 12 Sep 2009
Location: Greensville,Ont
Points: 24644 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jaybmiller Quote  Post ReplyReply Direct Link To This Post Posted: 05 Feb 2019 at 2:26pm
Should you also have changed the computer ?
3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)

Never burn your bridges, unless you can walk on water
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Brian Jasper co. Ia View Drop Down
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Joined: 11 Sep 2009
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Points: 10508 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian Jasper co. Ia Quote  Post ReplyReply Direct Link To This Post Posted: 05 Feb 2019 at 5:59pm

Did you do anything with the cooler? 4L80E is notorious for the TCC in the converter coming apart and clogging the cooler. A clogged cooler will make them act strange, delayed shifts, and ect.

"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford
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bobkyllo View Drop Down
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Joined: 14 Sep 2009
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Points: 1557 		Post Options Post Options   Thanks (0) Thanks(0)   Quote bobkyllo Quote  Post ReplyReply Direct Link To This Post Posted: 05 Feb 2019 at 8:37pm
There should be no computer that needs to be changed if I remember right. I was taught the range sensor was the computer.

No I did not change the cooler. Reverse band broke in the old one. Never gave the cooler a thought.

The shifting might be fantastic for half hour and then the next few shifts it may take longer to shift. But when it does it shifts nice and firm. No banging and no sloppy easy slipping into gear.

That's what made me think of a bad range sensor. Because the trans wouldn't be told what gear I went to.
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Hoss View Drop Down
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Joined: 06 Jan 2013
Location: IOWA
Points: 129 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Hoss Quote  Post ReplyReply Direct Link To This Post Posted: 05 Feb 2019 at 8:48pm
shift cable/ linkage adjusted properly?
I got both ends meetin in the middle but I can't seem to get em tied.
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