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06 Silverado troubles
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thendrix View Drop Down
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Joined: 04 Feb 2013
Location: Fairmount GA
Points: 4881 		Post Options Post Options   Thanks (0) Thanks(0)   Quote thendrix Quote  Post ReplyReply Direct Link To This Post Topic: 06 Silverado troubles
    Posted: 24 Apr 2018 at 7:24am
I've got an 06 Silverado that doesn't want to shift into passing gear. It up shifts through the gears just find but when I try to go to passing gear it vibrates and doesn't want to shift. If I mash the pedal down further it will shift. I had the trans serviced thinking maybe a clogged filter but no help there. I was told by the mechanic it might be the throttle position sensor but he says the scanner should it to be good. Anybody got a suggestion?
"Farming is a business that makes a Las Vegas craps table look like a regular paycheck" Ronald Reagan
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Stan IL&TN View Drop Down
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Joined: 13 Sep 2009
Location: Elvis Land
Points: 6730 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Stan IL&TN Quote  Post ReplyReply Direct Link To This Post Posted: 24 Apr 2018 at 7:51am
How is hard acceleration from a stop?  Plenty of power and upshifts just fine?  Can you manually downshift the transmission OK?
1957 WD45 dad's first AC

1968 one-seventy

1956 F40 Ferguson
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Brian Jasper co. Ia View Drop Down
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Joined: 11 Sep 2009
Location: Prairie City Ia
Points: 10508 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian Jasper co. Ia Quote  Post ReplyReply Direct Link To This Post Posted: 24 Apr 2018 at 10:05am
Take the mat out from under the pedal.
"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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thendrix View Drop Down
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Joined: 04 Feb 2013
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Points: 4881 		Post Options Post Options   Thanks (0) Thanks(0)   Quote thendrix Quote  Post ReplyReply Direct Link To This Post Posted: 24 Apr 2018 at 10:33am
Start and upshift is fine. Haven't tried manual shifting. The problem doesn't start until things get warmed up. I'm pretty sure its a sensor somewhere that's about ready to go and throttle position sensor makes sense it just didn't show anything on the scanner.
"Farming is a business that makes a Las Vegas craps table look like a regular paycheck" Ronald Reagan
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Stan IL&TN View Drop Down
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Joined: 13 Sep 2009
Location: Elvis Land
Points: 6730 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Stan IL&TN Quote  Post ReplyReply Direct Link To This Post Posted: 24 Apr 2018 at 10:48am
I made some assumptions on engine/model.  These are from Rockauto.com


Edited by Stan IL&TN - 24 Apr 2018 at 10:49am
1957 WD45 dad's first AC

1968 one-seventy

1956 F40 Ferguson
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thendrix View Drop Down
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Joined: 04 Feb 2013
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Points: 4881 		Post Options Post Options   Thanks (0) Thanks(0)   Quote thendrix Quote  Post ReplyReply Direct Link To This Post Posted: 24 Apr 2018 at 3:24pm
Those were some pretty good assumptions there Stan
"Farming is a business that makes a Las Vegas craps table look like a regular paycheck" Ronald Reagan
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bakwoodsfarm View Drop Down
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Joined: 02 Sep 2010
Location: Woodleaf,NC
Points: 511 		Post Options Post Options   Thanks (0) Thanks(0)   Quote bakwoodsfarm Quote  Post ReplyReply Direct Link To This Post Posted: 24 Apr 2018 at 5:28pm
Make sure they serviced the trans with the right kind of fluid, that should take the synthetic global fluid, assuming it was fine before the service.
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thendrix View Drop Down
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Joined: 04 Feb 2013
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Points: 4881 		Post Options Post Options   Thanks (0) Thanks(0)   Quote thendrix Quote  Post ReplyReply Direct Link To This Post Posted: 24 Apr 2018 at 5:32pm
It was acting up before. I read that it could be caused by a slight misfire that's not enough of a misfire to turn the light on. I'm sure it could use plugs, wires, etc so I'm going to go that route and see how it does then
"Farming is a business that makes a Las Vegas craps table look like a regular paycheck" Ronald Reagan
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HD6GTOM View Drop Down
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Joined: 30 Nov 2009
Location: MADISON CO IA
Points: 6627 		Post Options Post Options   Thanks (0) Thanks(0)   Quote HD6GTOM Quote  Post ReplyReply Direct Link To This Post Posted: 24 Apr 2018 at 10:29pm
Sounds like the valve body is sticking.
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