L99 Vibration in car

[gtstorey]

Originally Posted by GenesisCoupe

Anybody could help with restoring DOD/AFM ? Its this kit (x2) is enough ?

https://www.ebay.com/itm/224342306459

Restoring or removing DOD?

[GenesisCoupe]

Originally Posted by gtstorey

Restoring or removing DOD?

Restoring. I would to save this sytem because of good fuel economy. Currently I use Range OBD device, my mpg is 16. Without it by default mpg is 19.5. Only I have is annoing vibrations, simulating bad torque converter. I would to repair this AFM system )

Is this set is enough ? Anybody could help me ?

https://www.ebay.com/itm/224342306459

[gtstorey]

Originally Posted by GenesisCoupe

Restoring. I would to save this sytem because of good fuel economy. Currently I use Range OBD device, my mpg is 16. Without it by default mpg is 19.5. Only I have is annoing vibrations, simulating bad torque converter. I would to repair this AFM system )

Is this set is enough ? Anybody could help me ?

https://www.ebay.com/itm/224342306459

If you read the description those are the NON-DOD lifters. He says he has the DOD lifters available also on EBAY. I would replace the 8 NON-DOD lifters and the 8 DOD lifters if it was me. I would also probably replace the valley cover since it is part of the system also.

[GenesisCoupe]

Originally Posted by gtstorey

If you read the description those are the NON-DOD lifters. He says he has the DOD lifters available also on EBAY. I would replace the 8 NON-DOD lifters and the 8 DOD lifters if it was me. I would also probably replace the valley cover since it is part of the system also.

Just for clarification, to save DOD/AFM I need to replace 8 DOD lifters and 8 Non-Dod lifter. Then need to replace valley cover, this one:

https://www.ebay.com/itm/163460304922?epid=10027523741

I am right ?

[PlymouthBarracuda]

Hey man, I have the same issue. Few month ago I bought 2010 camaro SS and it had the same symptoms, unpleasant vibrations at 20 - 60 mph, looks like a bad torque converter and / or bad solenoid valves in the transmission. I went to the local GM dealer in London, they drived a bit, then turned off Dod/AFM system from their handheld computer. The issue dissapeared and they said that Dod/AFM system parts must be replaced. It is very expensive to do this kind of works in the official GM centers so I am looking to do it at side.

I am a total newbie with GM cars and ask you to help me collect all parts for restoting this AFM system. We have very expensive Premium Gas so I am looking to not to delete it.

I am looking at RockAuto website and need your help, sirs, because could not understand wich lifters I have to order. Here is the link:

https://www.rockauto.com/en/catalog/...ve+lifter,5548

My car's vin number begins with 2G1FK1E...

For example that page suggests

SEALED POWER HT2148A
Fits Active Fuel Management Engine; HT-2418A For Intake and Exhaust on Cylinder 2358; HT-2303 For Intake and Exhaust on Cylinder 1467; Riveted Retaining Pin; Hydraulic Roller Lifters

or Non Active Fuel Management Engine; Riveted Retaining Pin; Hydraulic Roller Lifters

Does these lifters are applicable for my L99 engine ? If yes, how many of them I need to buy ?

Or on Ebay I could find this set https://www.ebay.com/itm/224462284748

and as mentioned above https://www.ebay.com/itm/163460304922?epid=10027523741

Could anybody help to collect all needed parts...

[gtstorey]

Originally Posted by GenesisCoupe

Just for clarification, to save DOD/AFM I need to replace 8 DOD lifters and 8 Non-Dod lifter. Then need to replace valley cover, this one:

https://www.ebay.com/itm/163460304922?epid=10027523741

I am right ?

Looks right to me.

[gtstorey]

Originally Posted by PlymouthBarracuda

Hey man, I have the same issue. Few month ago I bought 2010 camaro SS and it had the same symptoms, unpleasant vibrations at 20 - 60 mph, looks like a bad torque converter and / or bad solenoid valves in the transmission. I went to the local GM dealer in London, they drived a bit, then turned off Dod/AFM system from their handheld computer. The issue dissapeared and they said that Dod/AFM system parts must be replaced. It is very expensive to do this kind of works in the official GM centers so I am looking to do it at side.

I am a total newbie with GM cars and ask you to help me collect all parts for restoting this AFM system. We have very expensive Premium Gas so I am looking to not to delete it.

I am looking at RockAuto website and need your help, sirs, because could not understand wich lifters I have to order. Here is the link:

https://www.rockauto.com/en/catalog/...ve+lifter,5548

My car's vin number begins with 2G1FK1E...

For example that page suggests

SEALED POWER HT2148A
Fits Active Fuel Management Engine; HT-2418A For Intake and Exhaust on Cylinder 2358; HT-2303 For Intake and Exhaust on Cylinder 1467; Riveted Retaining Pin; Hydraulic Roller Lifters

or Non Active Fuel Management Engine; Riveted Retaining Pin; Hydraulic Roller Lifters

Does these lifters are applicable for my L99 engine ? If yes, how many of them I need to buy ?

Or on Ebay I could find this set https://www.ebay.com/itm/224462284748

and as mentioned above https://www.ebay.com/itm/163460304922?epid=10027523741

Could anybody help to collect all needed parts...

To rebuild the lifter system, you need 8 DOD lifters and 8 Non DOD lifters, although you don't necessarily have to replace the non DOD lifters. The ones on rock auto under standard replacement are either non DOD lifters or don't say. The only ones that say they are DOD lifters are Ultra-Power JB7011.

The non name lifters on ebay are DOD lifters, but I would not install a no name lifter in my engine. Anything that comes through Walnut California is likely counterfeit junk from China.

The Elgin Lifters listed earlier in this discussion are also non-dod lifters.

You need 8 each of the lifters listed here or trace part numbers that match these;
https://www.gmpartsonline.net/v-2014...engine--engine

[gtstorey]

I would also add to both PlymouthBarracuda and GenesisCoupe that I've been on here since 2017 and I don't remember anyone tracing "engine vibration to the AFM. Collapsed lifters and destroyed cams, yes. But not anything that came and went by simply turning the AFM/DOD on and off.

[gtstorey]

Another option for part number look up.

https://www.melling.com/parts-lookup/

https://www.drivcat.com/Application....cc/376cid&ga=Y

[1JEWLDSSRS]

Originally Posted by gtstorey

I would also add to both PlymouthBarracuda and GenesisCoupe that I've been on here since 2017 and I don't remember anyone tracing "engine vibration to the AFM. Collapsed lifters and destroyed cams, yes. But not anything that came and went by simply turning the AFM/DOD on and off.

Same here, I have been on here since 2011 when I bought my L99 Camaro brand new, and have never heard anyone have a vibration issue having to do with the AFM/DOD being active or not... Plus contrary to belief, the AFM/DOD when activated DOES NOT save you much in MPG savings, I checked myself with my Camaro when I still had them in the engine.

[GenesisCoupe]

Thank you all for replies, really helps. I agree that every part coming from Wulnut and some other places in California are Chinese junk.
So, I will replace only DOD 8 lifters and valley cover.

When car goes into V4 mode my feelings bring to mind vibrations, that disappear when Range OBD is plugged

[gtstorey]

Originally Posted by GenesisCoupe

Thank you all for replies, really helps. I agree that every part coming from Wulnut and some other places in California are Chinese junk.
So, I will replace only DOD 8 lifters and valley cover.

When car goes into V4 mode my feelings bring to mind vibrations, that disappear when Range OBD is plugged

I would almost expect a wiring/communication problem or maybe the AFM/DOD solenoid being the problem before the lifters.

[PlymouthBarracuda]

Originally Posted by gtstorey

Another option for part number look up.

https://www.melling.com/parts-lookup/

https://www.drivcat.com/Application....cc/376cid&ga=Y

Some websites suggest lifters with remarks "for VIN J" and "for VIN W", my vin number begins with 2G1FK1E... Is it J or W ?

Is I understood, all that I need is to replace 8 DOD lifters for intake and exaust. Are they on cylinder 1,4,6,7 or 2,3,5,8 ?

Which one from this list are applicable ? I lost my head too many options ))

https://www.drivcat.com/

[GenesisCoupe]

Originally Posted by gtstorey

I would almost expect a wiring/communication problem or maybe the AFM/DOD solenoid being the problem before the lifters.

If engine is opening its good to replace everything for not to open it second time, for me )

Did I found right solenoids you are talking about ? (Engine Cylinder Deactivation Solenoid For 05-2014 Chevy GM GMC 12571609 12580901)