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Pickups Chevrolet Silverado & GMC Sierra 2007/2008 Silverado and Sierra Active Fuel Management Problems
106 messages, Last post on Sep 01, 2009 at 9:04 PM
You are in the Chevrolet Silverado & GMC Sierra Forum. Your Host is kcram
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My 07 Has NO PROBLEMS. Which comes back to the accuser to provide viable proof instead of mindless jargon. I cant help but think back to the writing style which is similar to one I haven't seen till now. Time to get back to reading issues that are reality based from Chevy owners. |
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| Attributing intent to trolls is a very difficult issue since by its very nature to call someone a troll is to already assume an intent, that they are posting only to cause problems. So once a person is called a troll they have already been categorized by the speaker as someone with a certain intention. | |
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My 2007 Vortec Max has only one problem It Runs Great and my wife thinks I love my truck more than her 
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What kind of fuel economy do you get with a 6.0 with active fuel management
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Replying to: asylum575 (Nov 19, 2007 3:07 pm) |
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Replying to: cadillac5 (Oct 17, 2007 4:08 pm) 
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Just purchased 2008 Z71 Siverado 1500 5.3L 3300 miles both sensor causing engine hot error and fuel sensor back ordered, problem seems to be wide spead and cold related accordin to local dealer in Anchorage 
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Replying to: cadillac5 (Oct 17, 2007 4:08 pm) When easing to a stop or after stopping and slowly rolling (by easing off brake, no throttle apply) into my garage, the engine speed will increase surging the vehicle forward. It does not matter if the engine is cold or warm, nor driving for one minute or one hour. The engine speed will increase up to ~1000 rpm or more. The engine speed will surge and slowly come down to ~600 rpm in less than 15 seconds. This problem does not occur all the time, but I can bet on it happening each time I drive. This condition is known and called normal (by GM) with Silverados with AFM. I tried to get someone at Chevy to see that a vehicle accelerating on its own is not right. No luck. They don't talk to you, they send customer service to deal with you instead. So I will need to live with the condition and hope the sudden accel does not get someone hurt.
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Replying to: tafid (Dec 20, 2007 4:17 pm) I have AFM on my 2007 Silv. w/6.0. It doesn't do anything like you describe. In fact, AFM 4 cyl. mode does not even engage at speeds less than about 15 mph. I think it is WAY premature to blame your problem on the AFM system. It could be a malfunctioning engine control module, a sticky throttle body, etc. There are many things it could be besides the AFM. I am in no way downplaying your problem, just pointing out it very well may be unrelated to AFM. Good luck solving the problem, please post when you do. So far at 13K no problems, I like my Silverado. It's not perfect, but what is? It's the best 1/2 ton truck out there now, for a while anyway, at least until the Ford and Dodge re-design in a couple years. 1offroader
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Replying to: 1offroader (Dec 26, 2007 8:36 pm) Thanks for the comment. I am not the one who said my sudden accel issues was caused by the active fuel management system. The company (Chevy) told me that the reaction I am getting is normal with all Silverados with AFM. I agree that there seems to be another issue, but no one will listen or acknowledge it. As I was verbally told in the beginning of my attempt to get his resolved, there is no calibration for this issue 'at this time'. So I am stuck with a vehicle not functioning properly. There are no safety concerns and therefore no urgency on their part. tafid
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