Cylinder Deactivation Delete/Disable

[Patman]

The first thing I did was purchase the RANGE cylinder deactivation unit which stays plugged into the OBDII port on my 2014 Corvette. The mileage is currently at 35,000. I read hundreds of articles stating you can hurt your valve train and the torque tube as well as the rubber couplers and bearings. It's also harder on the transmission and other parts. I am not a Corvette expert however I believe this is money well spent and the cost is only about $200.00. I also read the less expensive units can be purchased for around $100 or less. I always felt it was worth it because gas is fairly inexpensive compared to drivetrain and engine parts. These units work on several GM models and I will probably remove it if I ever sell the Corvette. The cylinder deactivation can be performed by a competent technician but I chose to do it the easy way and buy the RANGE device.

I had to have the torque tube replaced in my C7 and I think that AFM may have played a role in that. Thankfully it happened while still under warranty, it would have likely cost me $10,000 for that repair up here

 

[trd1zz]

I can't think of any modern car today that will make 500k, 250k, yes
But not 500k. I'd be happy with 200k after my Honda died at 29k.

Best bet is one of the last non-hybrid 2GR's. With perfect maintenance from day 1 I bet you could make 500k. Either an IS350 or a '25 MY ES350.

 

[joekingcorvette]

I had to have the torque tube replaced in my C7 and I think that AFM may have played a role in that. Thankfully it happened while still under warranty, it would have likely cost me $10,000 for that repair up here

Wow that's a lot of money and it's good you had the warranty. I had the entire gas tank removed from mine due to a fuel leak however it was covered under a technical service bulletin. It would have been about $3000.00 labor. If I ever buy a C8 I am going to get a warranty.

 

[Wagonmaster261]

Best bet is one of the last non-hybrid 2GR's. With perfect maintenance from day 1 I bet you could make 500k. Either an IS350 or a '25 MY ES350.

From anecdata on 2GRs, the timing chain finally wears out around 400k, given proper maintenance. Many go sooner. In a FWD application, replacing the chain is an engine out deal.

The original engine in my 2007 GS450h went to about 247k when multiple VVTI codes showed up. It was swapped with a 150k salvage one. I'm at 265k now. The hybrid battery has also been worked on at some point.

1MZ or 3MZ might be better. Timing belts are more easily changed, and absorb some vibrations.

 

[ls1mike]

I didn't read everything but I have done a few GM DOD deletes. I have always used BTR to source my parts. It isn't difficult but it can be time consuming.

 

[amateurbob]

I didn't read everything but I have done a few GM DOD deletes. I have always used BTR to source my parts. It isn't difficult but it can be time consuming.

Do you know how miles are on each of the vehicles now?

 

[ls1mike]

Do you know how miles are on each of the vehicles now?

I did the Caprice early. I wanted it out. 30,000ish. The others ranged from 90,000 to 180,000.

 

[trd1zz]

From anecdata on 2GRs, the timing chain finally wears out around 400k, given proper maintenance. Many go sooner. In a FWD application, replacing the chain is an engine out deal.

The original engine in my 2007 GS450h went to about 247k when multiple VVTI codes showed up. It was swapped with a 150k salvage one. I'm at 265k now. The hybrid battery has also been worked on at some point.

1MZ or 3MZ might be better. Timing belts are more easily changed, and absorb some vibrations.

Timing chain / vvti problems on 2GR are almost always oil change related. "Proper maintenance" (10k interval) is too long. Buy a brand new 2GR and change the oil every 5k I bet it goes 500k miles, or at least has as good a chance as anything else out there in 2025/2026.

Regardless, I thought we were talking new vehicles. If you want to talk old stuff let's just end the conversation now and OP can go out and find a 2UZ.

 

[dlundblad]

A heavy duty pickup wouldn’t have cylinder deactivation.

If you can get past the 6.2 randomly imploding, it’s my understanding it can be done with GM’s half tons, but they need different valves? Not sure how I feel about opening a new engine. Not sure if ford has a delete option for the 5.0.

 

[Number_35]

Overall there are goods and bads / diminishing returns. Anyone wanting to go back to one cam timing, points and a 3 speed is living a false narrative.

Three forward gears? You must be talking about that new-fangled Hydramatic. Two is plenty. Only thing wrong with a Powerglide is they quit makin' them!

 

[OVERKILL]

A heavy duty pickup wouldn’t have cylinder deactivation.

If you can get past the 6.2 randomly imploding, it’s my understanding it can be done with GM’s half tons, but they need different valves? Not sure how I feel about opening a new engine. Not sure if ford has a delete option for the 5.0.

The DoD engines have different lifters, valves would be the same. You have to delete both the function in the software and the hardware (AFM/DFM lifters) for a "full" delete.