🔧 BUILD Holden on to hope

Charlie_Boy7

Addict
May 10, 2010
655
120
University Park, IL
Real Name
Charles
Just test drove it. Im not on fire which is cool. It just has a coolant leak somewhere. I'll find it in the morning when I attach the hood

20210522_022739.jpg
 

CMNTMXR57

GM, Holden & Chrysler Mini-Van nut swinger
Sep 12, 2008
26,148
31,262
Elgin
Per our conversation on fecesbook;

Take a look at Step 3 since you were having issues doing the relearn.

DTC P0315
Circuit Description
The crankshaft position (CKP) system variation learn feature is used to calculate reference period errors caused by slight tolerance variations in the crankshaft, and the CKP sensor. The calculated error allows the powertrain control module (PCM) to accurately compensate for reference period variations. This enhances the ability of the PCM to detect misfire events over a wide range of engine speed and load. The PCM stores the Crankshaft Position System Variation values after a learn procedure has been performed. If the actual crankshaft position variation is not within the Crankshaft Position System Variation compensating values stored in the PCM, DTC P0300 may set. If the CKP system variation values are not stored in the PCM memory, this DTC sets.

DTC Descriptors
This diagnostic procedure supports the following DTC.

DTC P0315 Crankshaft Position (CKP) System Variation Not Learned

Conditions for Running the DTC
• DTCs P0335, P0336, P0341, P0342, or P0343 are not set.

• The engine coolant temperature (ECT) is more than 70°C (158°F).

Conditions for Setting the DTC
The CKP system variation values are not stored in the PCM memory.

Action Taken When the DTC Sets
• The control module illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails.

The control module records the operating conditions at the time the diagnostic fails. The control module stores this information in the Freeze Frame/Failure Records.

Conditions for Clearing the MIL/DTC
• A current DTC, Last Test Failed, clears when the diagnostic runs and passes.

• A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.

• Clear the MIL and the DTC with a scan tool.



Step 1
Did you perform the Diagnostic System Check-Engine Controls?

Yes: Go to Step 2
No: Go to Diagnostic System Check - Engine Controls

Step 2
Preform the crankshaft position (CKP) system variation learn procedure. Refer to Crankshaft Position System Variation Learn .

Does the scan tool display Learned this ignition?

Yes: Go to Step 4
No: Go to Step 3

Step 3
If the CKP system variation learn procedure cannot be performed successfully, check for the following conditions and correct as necessary:

• Worn crankshaft main bearings

• A damaged reluctor wheel

• Excessive crankshaft runout

• A damaged crankshaft

• Interference in the signal circuit of the CKP sensor

• Any foreign material passing between the CKP sensor and the reluctor wheel

• A coolant temperature that is not within the Conditions For Running the DTC

• The ignition switch is in the ON position until the battery is drained.

• A PCM power disconnect with the ignition ON may erase the stored value and set the DTC P0315.

Did you complete the inspection?

Yes: Go to Step 4
--

Step 4
Clear the DTCs with a scan tool.

Turn OFF the ignition.

Start the engine.

Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.

Did the DTC fail this ignition?
Yes: Go to Step 2
No: Go to Step 5

Step 5
Observe the Capture Info with a scan tool.

Are there any DTCs that have not been diagnosed?
Yes: Go to Diagnostic Trouble Code (DTC) List
No: System OK

And here is GM's relearn procedure, not sure if it's different from what HP Tuners is having you do.

Crankshaft Position System Variation Learn
Important: While the learn procedure is in progress, release the throttle immediately when the engine starts to decelerate. The engine control is returned to the operator, and the engine will respond to throttle position after the learn procedure is complete.

1. Install the scan tool.
2. Apply the parking brake.
3. Block the drive wheels.
4. Close the hood.
5. Place the transmission in Park if the vehicle has an automatic transmission, or in Neutral if the vehicle has a manual transmission.
6. Idle the engine until the engine coolant temperature reaches 65° C (150°F).
7. Turn OFF all of the accessories.
8. Apply the brakes for the duration of the procedure.

Important: If the CKP System Variation Learn Procedure cannot be completed successfully, refer to DTC P0336 for additional diagnostic information.

9. Use the scan tool in order to enable the Crankshaft Position System Variation Learn Procedure.
10. Slowly raise the engine speed to 4,000 RPM.
11. Immediately release the throttle when the engine speed decreases.
12. Turn OFF the ignition for 15 seconds after the learn procedure is completed successfully.
 
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Charlie_Boy7

Addict
May 10, 2010
655
120
University Park, IL
Real Name
Charles
Per our conversation on fecesbook;

Take a look at Step 3 since you were having issues doing the relearn.



And here is GM's relearn procedure, not sure if it's different from what HP Tuners is having you do.

Nah this is the stock PCM. I missed the notification for your reply. I was Probably in my garage banging my head on my toolbox? I'll have to give step 3 a try when I get the car back, or maybe I'll get lucky and the shop will successfully run down the list while its there.

The GM method you posted is what I was doing before I took it to the shop nearby. A week goes by and the guy called saying he cant get it either, but had a few extra resources he'd look into before giving up. I honestly dont know how to feel at this point. He said I did everything correctly for it to be my 1st swap. That felt good coming from someone with 20+ years on top of my own experience. But like wtf???
 

CMNTMXR57

GM, Holden & Chrysler Mini-Van nut swinger
Sep 12, 2008
26,148
31,262
Elgin
Sometimes it is very finicky with any change OR lack of response in any parameter(s). Just for an example (I know that it isn't the same as your situation), but when trying to get I/M systems to run through the Tech2, there is a specific sequence, of things to do and steps to follow. One is to preemptively turn the low speed cooling fan on, this way it's already running and won't kick on during the test, causing a momentary surge/change in the parameters needed to run the test. It can be that sensitive.
 
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Charlie_Boy7

Addict
May 10, 2010
655
120
University Park, IL
Real Name
Charles
Sometimes it is very finicky with any change OR lack of response in any parameter(s). Just for an example (I know that it isn't the same as your situation), but when trying to get I/M systems to run through the Tech2, there is a specific sequence, of things to do and steps to follow. One is to preemptively turn the low speed cooling fan on, this way it's already running and won't kick on during the test, causing a momentary surge/change in the parameters needed to run the test. It can be that sensitive.

Wow that's sensitive, but actually makes sense. Shop called again and I told (Paul) that I wasn't pulling the parking brake. He told me during each attempt that he was so no worries. He also checked the wires running to the sensor itself and said they were fine. One very interesting thing he mentioned was that his scanner acts very strange when connected. It blinks and or flickers
 

Charlie_Boy7

Addict
May 10, 2010
655
120
University Park, IL
Real Name
Charles
Is it a Tech 2? If so, I wonder of the VCM Module is bad. That is a tell-tale sign (happened to mine), in addition to hooking it up and then setting off all the dash lights on an Envoy I had hooked up to.

Today he finally got it to relearn. Just in time to figure out cylinder 2 is at 90lbs compression. I am dead inside.
 
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