Code P0336, Now all I get is puffing sound when cranking but start?

On what color wire? The light green must have 12 volts for the sensor to work.

Roy

Can you test the voltage on the signal wire while cranking?

Roy

You are going to have to get someone to help you do these checks if you want to get to the root cause of failure.

See if you can get somebody to help you.

Roy

Hello again.

We haven't heard a report in awhile so we are curious to know if any progress has been made. Let us know if you need any other diagnostic steps or diagrams. Hope this helps and thanks again for using 2CarPros.

Danny-

Hello again.

Okay, let us know how things go after ECM replacement. There are a few relearn procedures that will need to be done after replacement. I've attached picture steps below showing how to replace the ECM and the relearn procedures. Hope this helps and thanks again for using 2CarPros.

Danny-

Like Danny stated, you need to program the replacement ECM for it to work.

Roy

Okay, did you have the ECM programmed to your VIN number? Even if you have the same part number it still has to be programmed to your VIN.

That can be done with a DRB 2 or equivalent advanced scan tool. Most shops have the capability to program the ECM.

Roy

Procedure

1. Setup - Ensure that the following conditions have been met:
The battery is fully charged.
The ignition is ON.
2. Program the PCM using the latest software matching the vehicle. Refer to the Techline terminal/equipment users instructions.
3. If the PCM fails to program, proceed as follows:
Ensure that all PCM connections are OK. Inspect the Techline terminal or equipment for the latest software version.
Attempt to program the PCM. If the PCM still cannot be programmed properly, replace the PCM. The replacement PCM must be programmed.
4. Perform the PCM Password Learn procedure. Refer to DTC P1631 Theft Deterrent Start Enable Signal Not Correct.
5. Perform the Idle Learn Procedure. Refer to Idle Learn Procedure.
6. Perform the CKP System Variation Learn Procedure. Refer to CKP System Variation Learn Procedure.
7. Reset the engine oil life monitor. Refer to GM Oil Life System - Resetting.
8. Perform the Functional Check.

FUNCTIONAL CHECK
1. Clear the Diagnostic Trouble Codes (DTCs).
2. Perform the powertrain On Board Diagnostic (OBD) System Check.
3. Start the engine and idle the engine for 1 minute.
4. Use the scan tool in order to inspect for DTCs.

Okay, I attached the wiring diagram of the crank sensor and the connector.

Do you have 12 volts to the connector on terminal C or the light green wire?

Also, put your voltmeter leads in the connector. Red lead to C and black lead to B or the yellow-black. Tell me the voltage. It should be battery voltage with the key on.

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Roy

Hello again.

Please give us an update as we haven't heard from you for awhile. Thanks again for using 2CarPros.

Danny-

Did you do any of the checks we suggested?

Roy

Okay, that is 14 on both pins? Did you put the black lead in the connector as well?

Roy