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Chevy Silverado and GMC Sierra Active Fuel Management Problems

367 messages,  Last post on May 24, 2013 at 7:56 AM

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

    

Messages Page 17 of 38

#154 of 367 2007-08 Chevrolet silverado active fuel managment by mgiguere

Jul 21, 2011 (5:36 am)

My 2008 chevrolet silverado with 52,000 mile on it already had the lifters replaced due to the fact it was consuming almost 2 quarts of oil every 1500 mile. Oil is still going some where once again. Also truck stinks rotten eggs and my exhaust is turning all black from running so rich. This all started after the replaced the lifters. Just got the truck inspected and now they are telling me i need ball joints and a cv boot WTF? I drive 45 miles on the highway to work everyday how does this happen? Gm not very helpful at all!

#155 of 367 Re: 2007-08 Chevrolet silverado active fuel managment [mgiguere] by kcram HOST

Jul 21, 2011 (4:34 pm)

Replying to: mgiguere (Jul 21, 2011 5:36 am)
Since your issues don't involve the Active Fuel Management system, please post your engine question here: Chevy Silverado and GMC Sierra Gasoline Engine Problems and the suspension question here: Chevy Silverado and GMC Sierra Suspension and Ride
 
kcram - Pickups/Wagons/Vans+Minivans Host

#156 of 367 '09? by rangermitch

Jul 22, 2011 (1:49 pm)

Were the problems with AFM resolved for the '09 and later models? Thank you.

#157 of 367 1989 l500 sierra problems by minismom

Jul 23, 2011 (7:11 am)

I purchased a l500 sierra (l989) as a farm truck - this is what it is doing - it does not accelerate after stopping at an intersection - stalls & won't restart - have changed distributor & brians, plugs & wires, new battery, oil & gas filter - also when it does restart it belches black smoke and smells like gasoline - does the same thing when it is in reverse - sucks up gas like crazy - I don't want to have to have the tank pulled to change the fuel pump, screen or sending unit - the check engine light is on also - mechanic told me it was the catallyc converter - other than that it is a nice truck & the body & frame is in great shape for a truck that age - thanks for any help

#158 of 367 Re: 1989 l500 sierra problems [minismom] by obyone

Jul 23, 2011 (12:01 pm)

Replying to: minismom (Jul 23, 2011 7:11 am)
Sounds like you have a plugged catalytic converter. However, that may be the result of your problem rather than the cause. Since you stated that they have changed the brains, the other cause could be a bad fuel pump. The belching of black smoke and the smell of fuel is exactly what killed your catalytic converter. Your plugs are probably fouled at this point also.
 
If you worked on the truck you could probably get away with $600 in parts to fix your truck. If using a mechanic you're looking at over $1000 to fix it. A replacement catalytic convter is close to $300 wholesale. Not sure if the truck is worth saving.

#159 of 367 Re: 2007-08 Chevrolet silverado active fuel managment [mgiguere] by cnw20

Aug 03, 2011 (12:37 pm)

Replying to: mgiguere (Jul 21, 2011 5:36 am)
I have an 07 Silverado with AFM and 5000 miles ago (I currently have 75K on it) the dreaded "add engine oil" light came and I had a dry stick. I took it to the dealer who replaced the gasket around the oil filter (you could see the oil accumulation on the bottom of the frame but surprisingly not a drop on my driveway - they told me it only leaked out at high speeds?) and added sealant to the bolts. Well 5000 miles later I have the same problem and am going back to the same dealer tonight - I'll keep you posted. Hey maybe if they fail to fix it this time I'll let it seize up and hopefully get a new engine?

#160 of 367 Re: 2007-08 Chevrolet silverado active fuel managment [cnw20] by gmcustsvc

Aug 03, 2011 (2:01 pm)

Replying to: cnw20 (Aug 03, 2011 12:37 pm)
cnw20,
 
I apologize for the problems you are experiencing with your vehicle. Please keep us posted on any information from the dealership.
 
Thank you,
Caron, GM Customer Service

#161 of 367 Re: 2007-08 Chevrolet silverado active fuel managment [gmcustsvc] by cnw20

Aug 04, 2011 (11:51 am)

Replying to: gmcustsvc (Aug 03, 2011 2:01 pm)
I just called Chevy at 800-222-1020, didn't get a case # yet, and they will contact the dealer who "tried" to tell me that using 3 quarts in less than 3000 miles is normal - I told them when I dropped off my truck last night do NOT tell me this and they called today and did. There's many TSBs all over the internet on this lousy engine and GM knows it - I plan to fight this to the bitter end. If in fact, as posted by u earlier, that these engines are supposed to burn a quart for every 2000 miles that only means one thing - GM is again making garbage like they did in the 70s!

#162 of 367 Re: 2007-08 Chevrolet silverado active fuel managment [cnw20] by gmcustsvc

Aug 04, 2011 (12:50 pm)

Replying to: cnw20 (Aug 04, 2011 11:51 am)
cnw20,
Can you please keep me posted on what happens with Customer Assistance? I apologize for your frustrations. I look forward to your update.
Christina
GM Customer Service

#163 of 367 Re: engine and lifter problems by tonygooch2000

Aug 22, 2011 (2:05 pm)

Replying to: mgiguere (Jul 21, 2011 5:36 am)
i got a brand new vortex max in 08 3 days after i got the truck i took it to the dealer to tell them about the knocking noise coming from the engine when the truck is running and a loud clicking sound when i make a u turn but the dealer was out of business so i took it to a other dealer they told me it was normal so i keep on driving until it became worst about 16,000k again they told me its normal then my friends told me its not normal because they all have the same trucks so about 35,000 i took it to a different dealer and they all said its normal mean wile i had lots of other small problems seat belt jam up door locks not work cruise control broke heated wind shell wipers not working and traction control broken so i drove the truck the ways it was until the engine blew up at 101,000k just over the warranty they fixed it under good=will repair then the same engine blew up 3 weeks later at 104,000k the guy from gm told me they would replace the truck or buyback the truck and had me take it to a dealer to confirm it was the engine so i did and some one else said they only gonna fix it again so far it cost gm over $20,000 to repair this shi# engine and i had to many things go wrong so i am pissed i will not expect this truck back at all and i demand a replacement truck and buyback this truck if not i will contact bbb about the and make sure non of my family or friend ever buy a gm product tonygooch2000yahoo.com

Messages Page 17 of 38

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