Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSGMC2007SIERRA CLASSIC 1500 2WD V6-4.3LREPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONP CODE CHARTSP0336
2007 GMC Sierra Classic 1500 2WD V6-4.3L
P0336
2007 GMC Sierra Classic 1500 2WD V6-4.3LSECTION P0336
DTC P0336
CIRCUIT DESCRIPTION
The powertrain control module (PCM) uses the crankshaft position (CKP) sensor to detect crankshaft speed and position. The CKP sensor connects to the PCM through the following circuits:
- The 12-volt reference circuit
- The low reference circuit
- The CKP sensor 1 signal circuit
If the PCM detects that the CKP sensor signal is incorrect for 3 seconds, DTC P0336 sets.
DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC P0336 Crankshaft Position (CKP) Sensor Performance
CONDITIONS FOR RUNNING THE DTC
The engine is cranking or running.
CONDITIONS FOR SETTING THE DTC
The PCM detects that the CKP sensor signal is incorrect for 3 seconds.
ACTION TAKEN WHEN THE DTC SETS
- The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
- The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.
CONDITIONS FOR CLEARING THE MIL/DTC
- The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
- 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.
TEST DESCRIPTION
Step 1 - Step 9:
Step 10 - Step 15:
The numbers below refer to the step numbers on the diagnostic table.
2. This step verifies that the malfunction is present.
3. This step tests for electromagnetic interference (EMI) on the CKP sensor circuits.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.