my truck regularly dies out/chugs for 5seconds and then throws p0336- crank position sensor.so i changed the crank sensor (gm dealer $160) but it still does it.my gm shop manuel doesnt give me any help.anyone know what this code is related to?what do i check now?is this code telling me one of the sensor circuits has a fault(poor ground or test circuit voltage or something),or is it telling me my crankshaft is physically out of position... in relation to the timing? your help is much appreciated! ,dont wanna wreck anything but i need to drive it and fix it immediately!

 

I'll post the diagnoses charts either later tonight or in the morning! I'll also do some research!

 

check the wires and maybe its grounding or something of that sort. wiggle the wires and follow them to the ecm and make sure nothing is wrong with them.

 

i read about people having this issue with the juice w/attitude programmer?but i've been using my edge programmer for about a year now with no problems, my turbo cool down timer quit workin on it awhile ago mind you...?

 

DTC P0336

DTC DESCRIPTORS

DTC P0335
Crankshaft Position (CKP) Sensor Circuit

DTC P0336
Crankshaft Position (CKP) Sensor Performance

DIAGNOSTIC FAULT INFORMATION

IMPORTANT: Always perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. See: Diagnostic Trouble Code Tests and Associated Procedures

TYPICAL SCAN TOOL DATA

CKP Sensor Signal Present






CIRCUIT/SYSTEM DESCRIPTION
The hall effect crankshaft position (CKP) sensor signal indicates the crankshaft speed and position. There are 57 teeth on the front of the crankshaft sprocket, plus a sync gap. The CKP sensor will output an ON/OFF pulse as each window passes the sensing element. The CKP sensor is connected directly to the engine control module (ECM) by the following circuits:


The 5-volt reference circuit
The low reference circuit
The signal circuit
CONDITIONS FOR RUNNING THE DTC

P0335


The engine is cranking or running.
The camshaft position (CMP) sensor signal is present.
DTC P0335 runs continuously when the above conditions are met.
P0336


The engine is cranking or running.
DTC P0336 runs continuously when the above condition is met.
CONDITIONS FOR SETTING THE DTC

P0335
The ECM determines no signal from the CKP sensor for less than 8 seconds .

P0336
The ECM determines that the CKP sensor signal is out of range for less than 2 seconds .

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


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.
DIAGNOSTIC AIDS


An intermittent CKP sensor signal may cause DTC P0336 to set. Wiggle the wiring harness with the engine running and observe the CKP Sensor Pulses Missed parameter on the scan tool. If the parameter indicates anything other than 0, there is an intermittent condition.
Inspect for insufficient fuel.
CIRCUIT/SYSTEM VERIFICATION


If DTCs P0642 or P0643 are set, diagnose those DTCs first.
The engine starts and runs.
CIRCUIT/SYSTEM TESTING


With the key ON and the CKP sensor disconnected, measure the voltage between the 5-volt reference and a good ground and observe that the DMM measures 4.98-5.02 volts .
If the DMM does not measure 4.98-5.02 volts , test the 5-volt reference for an open, high resistance, or a faulty ECM.
With the key ON and the CKP sensor disconnected, measure the voltage between the 5-volt reference circuit and the low reference circuit, and observe that the DMM measures 4.98-5.02 volts .
If the DMM does not measure 4.98-5.02 volts , test the low reference for an open, high resistance, or a faulty ECM.
With the key ON and the CKP sensor disconnected, connect a fused jumper wire to the signal circuit and momentarily and repeatedly probe the low reference circuit, and observe that the Crank Signal Present and engine RPM parameters change.
If the crank signal parameter and engine RPM does not change, test the signal circuit for an open, high resistance, a short to ground, a short to voltage, or a faulty ECM.
Ensure that the CKP sensor circuits are not routed too closely to the fuel injector wiring, after-market add-on electrical equipment, solenoids, relays, or motors.
Inspect the CKP sensor for physical damage, loose or improper installation, excessive air gap, or foreign material passing between the sensor and the reluctor wheel.
Inspect the CKP reluctor wheel for physical damage, improper installation, or excessive endplay or looseness.
If no other condition is found, replace the CKP sensor.
REPAIR INSTRUCTIONS

IMPORTANT: Always perform the Diagnostic Repair Verification after completing the diagnostic procedure.


Crankshaft Position (CKP) Sensor Replacement
Control Module References for ECM replacement, setup, and programming
Crankshaft Reluctor and Oil Pump Drive Gear Replacement

 

so i checked all wires and plug connections,checked the reluctor wheel-feels tight ,changed the fuel filter,i tested the plugs 3 wires- purple w/white stripe =4.95v white w/black stripe=5.0v gray w/black stripe=ground...i'm stuck,anyone have a techII computer laying around?

 

completely removed the edge juice w/attitude and truck runs fine now no more chugging or codes!sending in the edge on warranty!

 

thats good to hear, easy fix