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Chevy Silverado and GMC Sierra Active Fuel Management Problems

363 messages,  Last post on May 21, 2013 at 5:03 PM

You are in the Chevrolet Silverado & GMC Sierra Forum.

What is this discussion about? GMC Sierra 1500, Chevrolet Silverado 1500, Fuel System, Truck

    

Messages Page 34 of 37

#327 of 363 Re: 2008 Silverado 5.3 AFM [chuck1] by churchy25

Jan 07, 2013 (2:01 pm)

Replying to: chuck1 (Dec 17, 2012 5:46 pm)
Just becasue there are not posts on Edmonds forum, does not mean that there are not many others. If you google online, it is obvious that this problem is rampant. Per a mechanic at the dealership as well as a service writer, "it is not a matter of if but rather a matter of when." They have trucks come in as early as 50k miles (50k!!!!!) and some as far up as 175k miles. It is more than obvious that it is a design flaw.
 
Funny thing remains. I will be getting a new truck this year. No...not because of this problem occuring, but because it is time to trade in. They have had my business since I was 24. I have bought brand new Chevrolets every 4-5 years since. They will be the ones losing on this...not me. It may be such a minor amount to them, but it is big to me and I am happy they turned their back on me so now I can do the same.

#328 of 363 Re: 2007 Chevy Lifter Noise [gmcustsvc] by 07chevy

Jan 07, 2013 (7:57 pm)

Replying to: gmcustsvc (Jan 02, 2013 7:17 am)
Sarah,
 
You coming on here acting like you care is even more frustrating. Unless you have a solution to my problem why comment. If you said, hey Wes we know that lifter problem is a known issue on your truck. We can help, here is a solution....
 
My extended warranty just expired two months ago. The dealer isn't willing to help. The solution is the replace the bad lifter and pay out of pocket, that is a band-aid until the rest of the lifters expire. All the lifters need to be replaced, so I don't have continued issues in the future.
 
Please stop the comments, making people think GM really cares. Actions speak louder than words.

#329 of 363 Re: 2008 Silverado 5.3 AFM [churchy25] by 07chevy

Jan 07, 2013 (8:17 pm)

Replying to: churchy25 (Jan 07, 2013 2:01 pm)
Chuck,
 
If GM leaves me hanging out to dry on this (which is sounds like it), I'm done with GM as well. I will encourage my four kids to never buy GM. I'm a pretty young guy and I've always had Chevy trucks. I hate to say it, but I'm going to be looking at Ford's very soon. What makes matters worse is I will tell everyone I know about my situation. My friends and family know i keep my truck in perfect condition.
 
I wish you the best.

#330 of 363 Re: AFM noise under load [jswain2] by andy1967j

Jan 18, 2013 (7:50 pm)

Replying to: jswain2 (Dec 30, 2012 11:10 pm)
i have same problem with my 5.3 afm 2007 avalanche found out it is the lifters that cost about $2000.00 from dealer, there must be a bad design that they don't want to admit to. Cause every one i know has this noise problem. I finally solved the problem with out spending thousands of extra dollars which I have already spent $ 2600.00 and still broke down 4 more times, which found out some lifters were not replaced and not very happy. the afm lifters are failing but can still be used, the lifter internals can still pump oil and if your mechanically inclined can get an old chevy push rod the one with out the round tip and grind it down and before you do this you can put it in and see for your self that it pumps oil. I should have got the measurements but it was trial and error at first, cause if you take it down to much it will not pump oil, and if to long will cause your engine to run tight
they are not like the old motors you can adjust the rocker arms, new ones just bolt tight. i think they should recall all afm lifters

#331 of 363 DONE WITH GM !!! by andy1967j

Jan 18, 2013 (8:26 pm)

Going to a lawyer to find out if GM can be sued for not helping with this problem. I have the old afm lifter in my hand and i'm just pissed off. and motor only has 92000 miles and used royal purple with k/n oil filters always kepted up with my vehicles with the best.

#332 of 363 pissed again by andy1967j

Jan 20, 2013 (11:18 pm)

total engine failure took off heads today afm lifter collapsed roller was gone cam is gone found out it was the oil pump all along.

#333 of 363 Re: pissed again [andy1967j] by chuck1

Jan 21, 2013 (10:47 am)

Replying to: andy1967j (Jan 20, 2013 11:18 pm)
Respectfully dude...I know your upset.
 
But a Lawyer and court costs are far more than rebuilding your own motor. I understand you can change the crankshaft and valves and have a non-AFM motor.
 
Or, check in to a crate motor and see what the specs are on those.

#334 of 363 Re: AFM noise under load [andy1967j] by jswain2

Jan 30, 2013 (8:57 am)

Replying to: andy1967j (Jan 18, 2013 7:50 pm)
I'm mechanically inclined, but not that mechanically inclined. Not too comfortable with taking the heads off the motor, etc. I've been trying to trade the truck in on something else, took a day off work and went car shopping, but will lose a lot of money if I trade it. Who knows, might luck up and find something I can trade for even if I have to trade down considerably. I'd take roll up windows and rubber covered floors if I could get rid of the damn ticking, rattling, spark knocking, whatever the noise is. I've grown to hate that truck.

#335 of 363 Re: 2008 "Certified" used GMC Sierra [jswain2] by austyn0526

Feb 11, 2013 (1:13 pm)

Replying to: jswain2 (Dec 23, 2012 10:46 pm)
I have a 2008 Chevrolet Tahoe LTZ. I really love the design of the truck and all of the "bells and whistles" it has to offer. Now I'm starting to hate this truck. I took it to the dealer when it had 83,000 miles for oil consumption issues. They fixed this under the warranty by replacing the pistons and O rings (or so they say). The truck now has 124,000 miles on it and now needs lifters and a camshaft. I paid $40,000 for this truck and can't believe that GM won't own up to their mistake. I spoke with the service rep and he stated that this did not come from the warranty work they performed. After reading here I see that this is an engineering flaw by General Motors. I have been in touch with a Customer Service Rep which I believe to be pointless. I purchased this vehicle as a long term investment now I have to spend at the very least $2500.00 to have it repaired. If I don't hear anything back from GM I will be selling my other two GM cars and trading the Tahoe. I have been a loyal customer of GM since I have been gainfully employed and currently own 2 more GM Vehicles. I had an oil consumption issue with my 2001 Cadillac and they repaired the issue under warranty. I currently have 170,000 miles on the car and have had no other issues. 170,000 on a Northstar from what I hear, is extremely rare. Now they are making a sub par product and won't admit it. If I don't hear from them soon I will be fixing this truck (which I love) and go trade it at the Toyota Dealership for a Sequoia. I believe in buying American but not throwing my money away. I feel as if I have thrown my money away. My father has two GM Trucks one has over 250,000 miles on it and the other has 130,000 and never had any engine issues. This is how I know it is due to the active fuel management system. I hate to start buying foreign but what choice do I have at this point.

#336 of 363 Re: 2008 "Certified" used GMC Sierra [austyn0526] by sadsilverado

Feb 13, 2013 (12:25 pm)

Replying to: austyn0526 (Feb 11, 2013 1:13 pm)
I feel your pain. After approving the replacement of bad lifters and ruined camshaft(at my expense, no help from GM or the dealer), I swapped my ride for a 2012 Dodge Ram. I have nearly 10,000 miles on it and it is fantastic. I didn't realize the additional power the Ram Hemi 5.7 has over the Chevy 5.3. When pulling a trailer loaded down with atv's, hunting/camping gear plus more, if not for the rearview mirror, would not even know the trailer was back there. The Chevy struggled at times, especially on hills. RAM has the MDS system, but after searching & searching, have found no one with issues. Hopefully it'll last for the long term. I have to laugh (or cry) every time the "Chevy - longest lasting truck on the road" commercial plays. Fool me once, shame on you...no more GMs for me. Fords or Rams, maybe a Toyota. Best of luck!

Messages Page 34 of 37

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