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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 35 of 38

#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!

#337 of 363 Re: 2008 "Certified" used GMC Sierra [gmcustsvc] by wvhotshot

Feb 16, 2013 (12:07 am)

Replying to: gmcustsvc (Dec 14, 2012 8:43 am)
The dealer has had my truck for over a week now trying to fix the collapsed lifter problem. They have changed the lifters the oil poppet valve and the inlet screen on the lifter control module and it still is not fixed. The only thing they have not replaced is the control module. The first time it went in for the problem they changed the lifters and it worked for about 8,000 miles before it did it again. The second time it cleared up and they said they could not reproduce it. Now the truck is past the 5 year point on the warranty. Since the problem was never fixed properly when it went in the first time shouldn’t it still be covered under the warranty?

#338 of 363 Re: 2008 "Certified" used GMC Sierra [wvhotshot] by churchy25

Feb 16, 2013 (6:51 am)

Replying to: wvhotshot (Feb 16, 2013 12:07 am)
Yes, it should still be covered. If they can pull up in the computer where a problem was noted before warranty expired, they should still cover it now.

#339 of 363 Re: 2008 "Certified" used GMC Sierra [wvhotshot] by wvhotshot

Feb 23, 2013 (7:41 am)

Replying to: wvhotshot (Feb 16, 2013 12:07 am)
Update… It took two weeks to finally get my truck back. I had to go to the dealer and talk to the service manager and the mechanic to tell them how to fix the problem. They had changed out all of the fuel control lifters, the poppet valve and inlet screen to the valve control. Basically they had changed everything in the system except for the controller with the four solenoid valves in it. I explained to them that the only thing left to do was to change the controller assembly. After they finally changed it out the system worked just fine. I went directly to the service manager when I went to pick the truck up and had a chat about how it should be covered under warranty because the problem was never fixed correctly the first time they had it he changed the invoice and GM paid for the repair. If it comes back again I’m dumping the truck and getting the diesel 2500 or getting a Ford. I’m done with the crappy GM fuel management system.

#340 of 363 Re: 2008 "Certified" used GMC Sierra [churchy25] by wvhotshot

Feb 23, 2013 (8:00 am)

Replying to: churchy25 (Feb 16, 2013 6:51 am)
They covered it but only after I forced the issue.

#341 of 363 Re: 2008 "Certified" used GMC Sierra [wvhotshot] by chuck1

Feb 23, 2013 (12:20 pm)

Replying to: wvhotshot (Feb 23, 2013 7:41 am)
Unless you really need the pulling power of a diesel, the fuel and maintenance costs are prohibitive IMHO. Look at a Ford F150 w/the 5.0 or the Tundra or Dodge w/their biggest gas motors.

Messages Page 35 of 38

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