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Duramax Third Generation: 2006-2007.5 (LBZ & LLY) Discuss the third generation (2006-2007.5 LBZ & LLY) of the 6.6L Duramax diesel engine & associated components. 2006 LLY engine discussion also belongs in this forum due to the similarities of the 2006 LBZ and the 2006 LLY. Engine related discussion ONLY.

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Old 08-16-2016, 03:26 PM   #1 (permalink)
woodfinx
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Truck dies while turning and braking

About 4 months ago I changed my stock power steering lines over to the Xtreme Diesel lines. At that time the truck started making an occasional whining noise when I would turn. I chalked it up to the new lines.

About a week ago I was turning into work after sitting with the truck idling in a parking lot for about 10 minutes and it died. A few days later I was turning again and it died after I let the truck idle for about 15 minutes waiting to pick someone up from the airport.

Today, the truck died on me 4 times, each time it died I was turning and braking simultaneously. If I brake gently and turn gently it won't die, if I brake then turn it wont die, if I turn then brake it wont die. I pulled the codes after the first 2 times it died and got a p0336 and reset. I pulled the codes after it died on me several times today and got a p0336 and p0606.

The shop can't get it in until Monday. Anyone have any ideas?

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Old 08-16-2016, 03:42 PM   #2 (permalink)
jon5212
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P0336 is crankshaft sensor error. Could be a rub through of wires, bad sensor, which would cause your truck to die if it's losing connection to the crankshaft sensor.

As far as your whining power steering, i'd try a flush of the power steering system. If that doesn't work sounds like a new power steering pump and new fluid.

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Old 08-16-2016, 03:50 PM   #3 (permalink)
woodfinx
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Quote:
Originally Posted by jon5212 View Post
P0336 is crankshaft sensor error. Could be a rub through of wires, bad sensor, which would cause your truck to die if it's losing connection to the crankshaft sensor.

As far as your whining power steering, i'd try a flush of the power steering system. If that doesn't work sounds like a new power steering pump and new fluid.
Any idea why it will only die in a braking turn?
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Old 08-17-2016, 02:03 PM   #4 (permalink)
Ron Nielson
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My guess is that your recent work disturbed some of the wiring for the CKP sensor. Check the wiring carefully.

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


  • The engine is cranking or running.
  • DTC P0336 runs continuously when the above condition is met.
  • DTCs P0652 or P0653 are not set.
Conditions for Setting the DTC

The ECM determines that the CKP sensor signal is out of range.

Action Taken When the DTC Sets

DTC P0336 is a Type A DTC.

Conditions for Clearing the MIL/DTC

DTC P0336 is Type A DTC.

Circuit/System Verification


  1. If DTCs P0652 or P0653 are set, diagnose those DTCs first.
  2. The engine starts and runs.
  3. Engine running, observe the DTC information with a scan tool. DTC P0336 should not set.
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
Circuit/System Testing


  1. 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.
  2. Ignition OFF, inspect the CKP sensor for correct installation.
    • If the sensor is loose, inspect the sensor and the O-ring for damage, replace as necessary.
  1. Inspect the engine for the following conditions:
    • The engine oil for debris
    • The crankshaft reluctor wheel for damage or foreign material passing between the sensor and reluctor wheel
    • The timing chain, tensioner, and sprockets for wear or damage
  1. If no other condition is found, replace the CKP sensor.


DTC P0602, P0606, P060B, P061C, P062C, P062F, or P2610

Diagnostic Instructions


DTC Descriptors

DTC P0602

  • Control Module Not Programmed
DTC P0606

  • Control Module Internal Performance
DTC P060B

  • Control Module Analog to Digital Performance
DTC P061C

  • Control Module Engine Speed Performance
DTC P062C

  • Control Module Vehicle Speed Performance
DTC P062F

  • Control Module Long Term Memory Performance
DTC P2610

  • Control Module Ignition Off Timer Performance
Description

These DTCs apply to internal microprocessor integrity conditions within the engine control module (ECM). This diagnostic also addresses if the ECM is not programmed.

The ECM monitors its ability to read and write to the memory. It also monitors a timing function.

Conditions for Running the DTC

P0602

  • The ignition switch is ON.
  • The controller is identified as a service replacement ECM.
P0606

  • The ignition switch is in Run or Crank.
  • The power take-off (PTO) is inactive.
  • The cruise control is inactive.
P060B

  • The engine speed is more than 650 RPM.
  • The ECM is powered up.
P061C

  • The ignition is ON.
  • The engine speed is less than 1,300 RPM.
P062C

The ignition is ON.

P062F

The ignition is ON.

P2610

The ECM is powered up.

Conditions for Setting the DTC

P0602

  • The ECM has not been programmed at Key On and Engine Off for 0.1 second.
  • This diagnostic runs continuously.
P0606

  • The ECM detects a microprocessor undervoltage or overvoltage condition. OR
  • The ECM detects an internal bus communication error. OR
  • The ECM detects an internal clock error. OR
  • The ECM detects an internal injector control error.
  • All tests run in less than 1 second.
  • This DTC runs continuously.
P060B

  • The ECM detects an incorrect internal analog/digital (A/D) signal for less than 1 second.
  • This DTC runs continuously.
P061C

  • The ECM detects that there is a difference between the CKP engine speed and the calculated engine speed of more than 320 RPM for less than 1 second.
  • This diagnostic runs continuously.
P062C

  • The ECM detects a fault in the ship that calculates redundant vehicle speed for more than 1 second.
  • This DTC runs continuously.
P062F

  • The ECM did not complete the last electronic erasable programmable read only memory (EEPROM) write event during the last ECM power down.
  • This diagnostic runs once per ignition cycle at power up.
P2610

  • The ignition off-timer is less than 0 second. OR
  • The ignition off-timer is less than 5 seconds for more than 10 seconds. OR
  • The ignition off-timer is unchanged for 60 seconds. OR
  • The ignition off-timer is not incrementing in 1-second intervals.
Action Taken When the DTC Sets


  • DTCs P0602, P0606, P060B, P061C, P062C and P062F are Type A DTCs.
  • DTC P2610 is a Type B DTC.
Conditions for Clearing the MIL/DTC


  • DTCs P0602, P0606, P060B, P061C, P062C and P062F are Type A DTCs.
  • DTC P2610 is a Type B DTC.
Circuit/System Testing


  1. Observe the DTCs with the scan tool.
  1. Test the voltage and ground circuits to the control module for the following:
    • A short
    • An open
    • High resistance
Important: DTC P2610 can be set with a loss of battery voltage to the ECM with the ignition ON. The ignition must be in the OFF position before disconnecting the ECM.


  1. If DTC P2610 is set, turn the ignition OFF and then completely disconnect the ECM harness connector from the ECM for approximately 1 minute. Reinstall all of the ECM connectors and then attempt to clear codes with the scan tool.
    • If DTC P2610 resets after code clear, replace the ECM.
  1. Replace the ECM.
R






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Old 09-15-2016, 10:58 AM   #5 (permalink)
woodfinx
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Replaced the power steering pump and crankshaft sensor. Fixed the dying while braking issue but after a few days the truck began stuttering on acceleration while in a left turn. Took it to a local diesel garage, he said everything looks sound and the only thing he think of is the TSB for the 2 and 7 injectors.

He was nice enough to recommend I research the ice pick trick since he was unsure it would fix it.

Truck hasn't stuttered since I got it back but I guess I'll be trying that if it starts to again.
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Old 09-15-2016, 12:26 PM   #6 (permalink)
mp06011999
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I definitely believe it's a wiring issue only because mine did all sorts of crazy stuff when I turned left hard or hit a bump and it turned out to be a broken ground. Plays havoc with the computer controlled truck. Dealer found it and it cost me upwards of $400 or so.

A private shop hooked it up to his reader before I took it to the dealer and he said "All of these codes make no sense. They are pointing to crazy things that don't apply". He's the one that told me to take it to the dealer because he doesn't have a clue as to why all the odd codes and behavior. The dealer didn't either....until they found the broken ground. That's all it was.
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Last edited by mp06011999; 09-15-2016 at 12:26 PM.
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Old 09-15-2016, 04:19 PM   #7 (permalink)
woodfinx
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I guess it wouldn't hurt to check the grounds too, it started up again today but only after the motor warmed up a bit. Anyone have a diagram of all the grounding locations.
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Old 09-15-2016, 10:34 PM   #8 (permalink)
Ron Nielson
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The GMUPFITTER site will give you all the ground locations. Unfortunately, it gives you ALL the ground locations, not just the main points, that you would likely be interested in.
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