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94 Chevy K1500 not coming out of first

604 Views 12 Replies 4 Participants Last post by  Mike Petraska
Hey guys, new here.

My truck runs pretty good nost of the time. Lately having an issue with it not wanting to shift from 1st to 2nd. Especially going up a hill. Its the 4.3l 4l60e. My brother and I changed the solenoids and computer thing and put a valve thing in it. Not alot of change. I saw where others look at the mass air flow and throttle position sensors, and was wondering if that my apply in my case? Any info would be greatly appreciated.

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I've been googling this for a couple days now, it's kinda stupid but check your fluid, low fluid can affect it shifting out
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