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06 Silverado troubles

Printed From: Unofficial Allis
Category: Other Topics
Forum Name: Shops, Barns, Varmints, and Trucks
Forum Description: anything you want to talk about except politics
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=149799
Printed Date: 16 Nov 2024 at 1:41pm
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Topic: 06 Silverado troubles
Posted By: thendrix
Subject: 06 Silverado troubles
Date 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?

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"Farming is a business that makes a Las Vegas craps table look like a regular paycheck" Ronald Reagan



Replies:
Posted By: Stan IL&TN
Date 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?

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1957 WD45 dad's first AC

1968 one-seventy

1956 F40 Ferguson


Posted By: Brian Jasper co. Ia
Date Posted: 24 Apr 2018 at 10:05am
Take the mat out from under the pedal.

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"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


Posted By: thendrix
Date 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.

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"Farming is a business that makes a Las Vegas craps table look like a regular paycheck" Ronald Reagan


Posted By: Stan IL&TN
Date Posted: 24 Apr 2018 at 10:48am
I made some assumptions on engine/model.  These are from Rockauto.com


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1957 WD45 dad's first AC

1968 one-seventy

1956 F40 Ferguson


Posted By: thendrix
Date Posted: 24 Apr 2018 at 3:24pm
Those were some pretty good assumptions there Stan

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"Farming is a business that makes a Las Vegas craps table look like a regular paycheck" Ronald Reagan


Posted By: bakwoodsfarm
Date 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.


Posted By: thendrix
Date 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

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"Farming is a business that makes a Las Vegas craps table look like a regular paycheck" Ronald Reagan


Posted By: HD6GTOM
Date Posted: 24 Apr 2018 at 10:29pm
Sounds like the valve body is sticking.



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