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Using spare key stopped engine from stalling and CEL now off


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Jdgstl
New User

Sep 14, 2015, 3:59 PM

Post #1 of 7 (965 views)
Using spare key stopped engine from stalling and CEL now off Sign In

My 2011 Buick LaCrosse CXL 4 cylinder began to experience engine stalling out when I would attempt to start from a stop or drive at very slow speeds. Putting it into low gear at these times the shifting up to normal drive would get me "around" the issue. The check engine light read P0011 which I was told was a camshaft position sensor error. I replaced it and still had the problem.

I took it to a local technician and they replaced the crankshaft sensors. Car still stalled at low RPMs. Check engine light Remained on with the added issue of the cars computer no longer communicating.

On a whim from reading a to not forum discussions on similar problems, I switched keys to the extra key I had. Car drives fine now. CEL is off and the engine does not die at low RPMs. Car hasn't stalled out at all!

What is the issue? Ignition related part? I'm afraid to assume the problem has been fixed just by using the alternate key.


Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Sep 14, 2015, 5:18 PM

Post #2 of 7 (960 views)
Re: Using spare key stopped engine from stalling and CEL now off Sign In

Haven't heard of a crank sensor causing a stall only at idle. Don't really understand why using the spare key would solve your issue. The ignition key or key less transmitter has a transponder, but that is used by the immobilizer and shouldn't cause your data bus to go down, stalling, or P0011 code to show up.

Did you have any aftermarket equipment installed or something hanging off the key chain that produced a radio signal or could cause EMI? Did this stalling issue just show up one day or has it been doing this for a while? Maybe it is just a coincidence and the problem is intermittent?





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Sep 14, 2015, 5:19 PM)


Jdgstl
New User

Sep 14, 2015, 6:12 PM

Post #3 of 7 (953 views)
Re: Using spare key stopped engine from stalling and CEL now off Sign In

Actually. I do have an "aftermarket" wiring kit that allowed me to upgrade the stock radio to the OEM navigation package. It's been in my vehicle for a year and half though with no previous problems.

I already shelled out $600 to a local repair shop and hate to take it back to the dealer unless I can figure out the reason why the alternate key has negated the previous problem.


Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Sep 14, 2015, 6:27 PM

Post #4 of 7 (951 views)
Re: Using spare key stopped engine from stalling and CEL now off Sign In

Very strange. The 11's are still kind of new to show up in the independents, so haven't run into that situation.

The P0011 is a camshaft sensor performance code. It doesn't necessary mean the sensor is faulty or has an electrical issue. It just means the computer was expecting the camshaft to be at a certain position and it wasn't.


Quote
The ECM detects the difference between the desired camshaft position angle and the actual camshaft position angle is greater than 5 degrees for greater 2.5 s.


This does have variable valve timing it is possible for the engine to stall or run really bad if the camshaft wasn't at the right position at idle speeds. Of course, that code may of had nothing to do with it stalling, but there is always a possibility. Looking at freeze frame data when it coded may have given some clues. Did the code ever come back?

Was there anything on the key chain with the original key? Just strange that the data bus was affected by this. I guess time will tell.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Sep 14, 2015, 6:29 PM)


Double J
Veteran / Moderator
Double J profile image

Sep 15, 2015, 1:13 AM

Post #5 of 7 (933 views)
Re: Using spare key stopped engine from stalling and CEL now off Sign In

Your vehicle MAY be involved in this recall.
Call your dealer with your vehicle VIN (vehicle Identification Number) to see if its included.
Either way, may be the fix for it.

Subject: 11195B – Rough Idle, Poor Driveability - Reprogram Engine Control Module Models: 2011 Buick LaCrosse, Regal 2011 Chevrolet Equinox 2011 GMC Terrain Equipped with a 2.4L Gas Engine (LAF)

Reminder: Vehicles that have been delivered to customers MUST have the camshaft position actuator solenoid valves replaced, in addition to reprogramming the ECM . Please discard all copies of bulletin 11195A, issued August 2011.
Condition:

General Motors has decided to conduct a Voluntary Emission Recall involving certain 2011 Buick LaCrosse, Regal; Chevrolet Equinox; and GMC Terrain vehicles equipped with a 2.4L gas engine (LAF). On these vehicles, the camshaft position actuator solenoid may stick, resulting in the illumination of the malfunction indicator light, rough idle, poor driveability, and/or possible stalling at low throttle opening. Correction

Dealers are to reprogram the engine control module and, if necessary, replace the camshaft position actuator solenoid valves. Vehicles involved

Involved are certain 2011 model year Buick LaCrosse, Regal; Chevrolet Equinox; and GMC Terrain vehicles equipped with a 2.4L gas engine (LAF).
Important: Dealers are to confirm vehicle eligibility prior to beginning repairs by using the Required Field Actions section in the Global Warranty system. Not all vehicles may be involved.
For dealers with involved vehicles, a listing with involved vehicles containing the complete vehicle identification number, customer name, and address information has been prepared and will be provided to US and Canadian dealers through the GM GlobalConnect Recall Reports, or sent directly to export dealers. Dealers will not have a report available if they have no involved vehicles currently assigned.
The listing may contain customer names and addresses obtained from Motor Vehicle Registration Records. The use of such motor vehicle registration data for any purpose other than follow-up necessary to complete this recall is a violation of law in several states/provinces/countries. Accordingly, you are urged to limit the use of this report to the follow-up necessary to complete this recall. Parts Information

Parts required to complete this recall are to be obtained from General Motors Customer Care and Aftersales (GMCC&A). Please refer to your “involved vehicles listing” before ordering parts. Normal orders should be placed on a DRO = Daily Replenishment Order. In an emergency situation, parts should be ordered on a CSO = Customer Special Order.
Part Number
Description
Quantity/Vehicle
12628347
Valve, Cm/Shf Posn Actr Int Sol
1 (If Req’d)
12628348
Valve, Cm/Shf Posn Actr Exh Sol
1 (If Req’d) Service Procedure

Determine the vehicle status.
  • If the vehicle is still in dealer inventory, reprogram the ECM with the latest calibration. Refer to ECM Programming in this bulletin. Do NOT replace the camshaft position actuator solenoid valves.
  • If the vehicle has been delivered to the customer, reprogram the ECM and replace the camshaft position actuator solenoid valves. Refer to Engine Controls – Camshaft Position Actuator Solenoid Valve Replacement in SI.

ECM Programming
Do not attempt to order the calibration number from GM Customer Care and Aftersales. The calibration numbers required for this service procedure are programmed into control modules via a Multiple Diagnostic Interface (MDI) or Tech 2® diagnostic scan tool and TIS2WEB with the calibration update. Use TIS2WEB on or after 6/23/11 to obtain the calibration. If you cannot access the calibration, call the Techline Customer Support Center at 1-800-828-6860 (English) or 1-800-503-3222 (French) and it will be provided. Make sure your Tech 2® diagnostic scan tool is updated with the latest software version or verify that the multiple diagnostic interface (MDI) that is being used is configured to the PC that will be used. Clear any codes and verify the condition has been corrected.
For step-by-step programming instructions, please refer to SI and the Techline Information System (TIS) terminal.
  1. Verify that there is a battery charge of 12 to 15 volts. The battery must be able to maintain a charge during programming. Only use an approved Midtronics® PSC 550 Battery Maintainer (SPS Programming Support Tool EL-49642) or equivalent to maintain proper battery voltage during programming.
  2. Reprogram the engine control module (ECM). Refer to SI and Service Programming System (SPS) documentation for programming instructions, if required.
    1. Connect the MDI to the vehicle. Connect the MDI to the programming terminal with a cable (USB or LAN).
    2. Select J2534 MDI and Reprogram ECU from the Select Diagnostic Tool and Programming Process screen.
    3. Select ECM Engine Control Module—Programming from the Supported Controllers screen.
    4. Follow the on-screen instructions.
  3. Clear all DTCs.
  4. If the vehicle has been delivered to the customer, replace the camshaft position actuator solenoid valves. Refer to Engine Controls – Camshaft Position Actuator Solenoid Valve Replacement in SI.
  5. CALIFORNIA, CONNECTICUT, MARYLAND, MASSACHUSETTS, MAINE, OREGON, VERMONT, & WASHINGTON vehicles only: Install a Recall Identification Label.



Jdgstl
New User

Sep 15, 2015, 11:01 AM

Post #6 of 7 (916 views)
Re: Using spare key stopped engine from stalling and CEL now off Sign In

The code has not returned as of today. And as far as I can tell both keys are identical.


Jdgstl
New User

Sep 15, 2015, 11:11 AM

Post #7 of 7 (914 views)
Re: Using spare key stopped engine from stalling and CEL now off Sign In

Broke down and made an appointment to have dealer look at it. I'll advise when I get results.

Thanks to all who have brainstormed this conundrum!






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