I have had the last gm column lock done--put around 2000 miles since--car runs great -my question is since the recall was done do i still need a 120 reserve capacity battery as c4c5 specialist says in his videos/and the forums?

 

Thinking an LMC5 is all you need.

 

Reading your post. Do you have an aftermarket column lock bypass or just the GM recall? If just the GM recall, yes you definitely need the 120 RC. You will also get plenty of people on here telling you to do an aftermarket bypass.

I personally would stay with the 120 hr RC even with an aftermarket bypass. The electronics in these cars can be fickle above and beyond the column lock. JMHO

 

I had the last GM recall done-last year-i was thinking since the last one i believe removes the locking device-ect.-i would not need a 120 reserve capacity battery-it wouldnt require that much voltage

 

There is no GM fix for a CL issue. Maybe if you have an automatic and they modified the column and did not put in the 2 mph limit.

I would recommend you install an LMC5 and keep a 120 RC battery. There are many other issues with a low battery voltage than just s CL issue.

I have the LMC5 info at home if you want to read my info.



Mr. Sam

 

I saw a video--paul koerner --c4c5 specialist made in carlisle i think 2014--anyway he said 120 reserve capacity will cure any column lock issues-and that was the problem to begin with--not enough RC--he went on to say that all c5 corvettes came with the 2mph fuel shutoff from the factory and the dealers had nothing to do with that-when they did the recalls-

 

I think its on vette tube--anyway do you agree with 120 RC playing into service column lock issues ect?

 

WELL SAID! 100% AGREE!
GM Enabled with a recall FLASH, and as a result of the CL issue. If the CL malfunctioned while you were driving, it would kill the engine. It wont let you move the car if the CL is not logically correct. Now it shuts the fuel off at 2mph......

If you are depending on the GM Fixes and just a GOOD BATTERY to save your *** from being stranded on the road,, GOOD LUCK!

YES,, the PROPER Reserve Capacity battery is critical! Its critical for a LOT more things than just the CL.

ALL the electronic Modules must get the correct voltages to operate properly. GM designed ALWAYS HOT feeds to many of the modules to keep memory, enable SECURITY MONITORING and to allow you to have ACCESS with the FOB. Even to keep your clock and radio memory alive! A LOT of different things..


The car is designed to draw approx. 20 milliamps when ever the ignition is OFF.

If you let the car sit for an extended period of time, and the battery is incapable of providing that 20ma over that period,,,,, the battery dies. The proper battery can allow you to start the car in excess of 30 days without an issue. Sure, it will be LOW on charge but, it should still start. Been there,, done that!

If you don't have a proper aftermarket CLB,,, I HIGHLY recommend that you get one. My go to CLB is the LMC-5.

Bill

 

Any problems with the ac delco 78PS leaking?

 

I just installed the LMC-5 last weekend, my 99 had the recall done quite some time ago so figured some preventative measures was necessary to increase failure mode. Reading the reply's mentions having a Reserve of 120 so I looked at what the PO put in this car and it was rated at 110, and the date code places this one at 3 years. So what is the recommended Battery ( Batteries) that would meet the ratings? I think I'm in the mood to replace it before parked on the side of some road.

 

The AC Delco Professional Series Battery is and OUTSTANDING choice. That is what I have in my 11 Grand Sport. NO LEAKGE!

I believe its an AGM Battery.. So,,,, Leakage isn't an worry..

 

Paul--the c4c5 specialist recommends the AC DELCO 78PS--it has 120 reserve with 700 cranking amps

 

I have often wondered this--GM recalled around 126.000 vettes--column lock fix--i wonder how many came to dealers and had any of the fixes done--how many today are still working fine with the fix--how many never had the fix--still working today--thousands im sure

 

I guess "no good deed goes unpunished," because I recommended the LMC-5 to my buddy here on the airport.......He has a 2003 Z06.

He wasn't having any problems, but now that he installed the LMC-5. his steering is locked!

I'd sure like for him to be able to talk with an expert. Bruce is an airshow pilot in a T-34.

 

This is a photo of my steering column internals that had the Column Lock Recall done CORRECTLY.
Notice the red arrow pointing at that metal?
THAT
Is the replacement for the Original type lock plate that I've also included an image for.
My car had the recall done, replacing that lock ring with the minimized collar, and the K-Harness done as well.
My car (luckily) died in my driveway.
I bought a by pass from Corvette Central, and it didn't work.
They were GREAT and connected me to the people who produce them.
Their tech again was great. Money back.
I bought the LMC and the guy there and I were on the phone as I did the job, and he pointed out bunches of stuff to me.
Haven't had a problem at all since.

 

My point here is, that if the dealership did the recall 'Correctly, in it's entirety', you should NOT have that dark lock ring in the column anymore, and even if the lock solenoid did engage, the column CAN'T LOCK....

 

Your friend should call Richard at http://www.complianceparts.com/index.html very hepful whenever a member has a question.

 

I consider the LMC5 to be the best Column Lock problem permanent fix out there. It also does not require you to “undo” any previous CL attempts to resolve this issue. Their eBay ads have a good video that shows the install at the BCM. It does not cover everything in the written instructions. So, read the instructions and also here is some extra info. In some cases, the BCM timing is off just enough to cause some issues. They make several versions and they can swap out/provide one of these if you have any issues. Their customer support is as good as it gets.

Not uncommon for people to "put the column in a pre-lock condition" and not know it and then start with the install. In other words, they started with the column lock “energized’ even if it was not actually locked yet. If not actually locked yet, it will be as soon as you turn the steering wheel after the LMC5 install. It will then remain in the locked condition until you cause the motor to unlock. It will then remain in the unlocked condition since the motor is then unpowered with the circuits disconnected.

Here is one way to prevent that if your column locks and unlocks normally:

If the CL is functioning normally you don't not need the Unlocker, merely turn the ignition ON, pull fuse #23 in the I/P fuse box, turn ignition OFF, turn the steering wheel (left and right) and verify it is unlocked. Next, disconnect the negative battery terminal, re-insert fuse #23 and continue with the install.

Also the 1999 and later C5's have a column lock relay that can be unplugged or else it will be powered and could fail and drain the battery. The LMC5 written guidance provides this info. This relay is above the BCM.

They also have a great install video in their eBay ads you need to watch.

Compliance Parts website: http://complianceparts.com/index.html


Mr. Sam

 

I watched the video again with Paul-c4c5 specialist--master mechanic with GM--he says that NO WAY the column lock issue can happen when driving the car--he explains why ALSO he says the fuel cut-off is programed in from the factory--nothing the dealer does when column lock recall is done--why would he state these facts without knowing??

 

Paul is a great guy but he has been wrong on one other thing I was involved with him. He is correct that a good battery will prevent almost all CL issues. But I don't want to get stuck with a CL issue for any reason if I can avoid it.


Mr. Sam