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2011 Silverado, POOR mileage, surging, no check engine light

77 messages,  Last post on Nov 01, 2012 at 5:57 PM

You are in the Chevrolet Silverado & GMC Sierra Forum.

What is this discussion about? Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Silverado 2500, Fuel Efficiency (MPG), Truck

Messages Page 6 of 8

#48 of 77 Re: Did they tell you it's normal? [daninrapidan] by chuck1919

Oct 23, 2012 (10:19 pm)

Replying to: daninrapidan (Oct 23, 2012 9:58 pm)
You should be driving a 1960s model. That way you could change you plugs condenser and points every 12000 miles. Your frustration is you need to buy 100k worth of computerized equipment to work on your truck.

#49 of 77 Re: Did they tell you it's normal? [chuck1919] by daninrapidan

Oct 24, 2012 (4:13 am)

Replying to: chuck1919 (Oct 23, 2012 10:19 pm)
We have a G30 old church van, 355,000 miles with a 350, and the old TBI system. 1000 lbs of tools in it, and on regular unleaded its getting 15 consistantly.
 
The 600$ programmer that will fix the issues, I should not have to spend, as well as violating my warranty. Not for a sticker price on THIS truck of over $46k. To be by the service department and the mechanic that GM has built these hesitations into the sub routine in the computer to "save" the transmission, and the EPA wont allow them to fix it is utter bull ****. Why is my GM vehicle running worse than the first 7500 miles ??
 
I would appreciate only useful comments on the issue, what or who fixes the problem permanently. At this point, my brother is right, find a decent older truck, and dump 46k into repairs and upgrades and have a real vehicle.

#50 of 77 Re: Did they tell you it's normal? [daninrapidan] by gmcustsvcsarah

Oct 24, 2012 (7:06 am)

Replying to: daninrapidan (Oct 23, 2012 9:58 pm)
daninrapidan,
 
If you're not already working with Customer Assistance and wanted for us to check into this further with you and your dealership, please email us at socialmediagm.com (include your name and contact information, a summary of the situation, the last 8 digits of your VIN and mileage, and the name of your dealership).
 
Sarah, GM Customer Service

#53 of 77 Re: Did they tell you it's normal? [daninrapidan] by chuck1

Oct 24, 2012 (9:28 am)

Replying to: daninrapidan (Oct 24, 2012 4:13 am)
Here is a useful comment for you. Do a search on the internet and find out exactly what the characteristics of these transmissions are. Then, you can make make an informed decision on how to proceed.
 
1) You can see if others are having the same issues.
2) You can see if they have been able to have them fixed.
 
It will lessen your frustrations.
 
I already know the answers to these questions.

#54 of 77 NEW GM TRUCK BUYERS by ceb66

Oct 25, 2012 (4:52 pm)

daninrapidan,
 
Check the transmission forum on this site for very, very similar issues.
 
Potential General Motors' truck buyers; test drive these trucks extensively at 45 mph and see if they clunk lag growl or bang as the active fuel management moves from 4 to 8 cylinders.
 
Check for slop in the rear end.
 
Let us know if you're told "it has to adjust to your driving habits." Right from the GM "play book"!

#55 of 77 Re: NEW GM TRUCK BUYERS [ceb66] by chuck1

Oct 25, 2012 (6:12 pm)

Replying to: ceb66 (Oct 25, 2012 4:52 pm)
Yes,
Please test drive them. They are a great value. In most major markets $10,000.00 discount off sticker is very common. GM sold over 50,000 units (Silverado/Sierra) in September of this year. The YTD totals so far are 410,381 units!

#56 of 77 Re: Did they tell you it's normal? [chuck1] by daninrapidan

Oct 25, 2012 (6:30 pm)

Replying to: chuck1 (Oct 24, 2012 9:28 am)
Im not interested in your comments Chuck, stay off my post. Glad you are happy with your Silverado, I am not..... Your comments are NOT helpful, in fact they are down right annoying... You're hawking these threads like you personally build these things and are upset there are people with LEGITIMATE complaints. Customer service has gone down hill in not only GM, but most major companies... Im tired of paying the price for someone else's shortfall, and corporate greed. I work very hard for my pay.
 
 If you are so happy, start your own thread saying so, Im sure you can find at least 12 others that will agree with you. Furthermore with the hundreds of review, and forum web sites with these problems being discussed, if there were only 12 per site, thats still alot of unhappy people...
 
In manufacturing there's typically 5-10% of a product that does not work properly. Thats where customer service comes in to play ... making those people happy again. To be dismissive is not a correction, but a cover up.
 
Enough said, Im getting rid of my silverado at a very high cost to me.
 
Lesson learned
 

#57 of 77 Re: NEW GM TRUCK BUYERS [ceb66] by string2

Oct 25, 2012 (7:04 pm)

Replying to: ceb66 (Oct 25, 2012 4:52 pm)
Let us know if you're told "it has to adjust to your driving habits." Right from the GM "play book"!
=====================================================
 
Hey ceb66,
   I was told "the trucks computer system has to learn your driving habits" the first time I took my 2011, 1500 crew cab into the dealer at around 1700 miles. The AFM wasn't allowing the motor to drop back to 4 cylinders above about 65 MPH on level highway. It now has about 12,500 miles on it, and it still hasn't learned my driving habits. Every time I talk to them, they come up with some other reason why it won't work, including "it's working normal"
   I went over to the used truck dealer and drove two just like mine. One had 46,000 miles on it, the other 16,000. They both drove just like mine (which is different than the 2011 Silverado Manual explains). It explains that these vehicles should operate in v4 AFM mode well above 70 MPH on flat lever highway, at steady speed without an excessive load (Full details can be found in GM's shop manual)
   These truck computers must be real slow learners, but I'm afraid mine will need to be put in the Insane Asylum (pretty soon).
  
   $34,500 for a truck that gets 15 MPG in town & 16 on the Highway. Talk about getting screwed!!!!!

Messages Page 6 of 8

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