Top 20 2008 Chevrolet Express - Page 7 Questions & Answers

Trouble Code: P1336 CKP Sensor System Variation Not Learned Possible Causes: Set the parking brake and block the drive wheels for safety. Verify the hood is closed. Read the trouble codes. If a code is set, refer to that code. Start the engine. Allow engine temperature to reach at least 158?F (70?C). Then key off. Select Crankshaft Position Variation Learn procedure on Scan Tool & start the vehicle. Apply the brake pedal firmly and verify the selector is in Park. Increase accelerator pedal position until fuel cutoff is reached at the test rpm (e.g., 5150). Quickly release the accelerator pedal after fuel cutoff is reached. The CKP system variation compensating values are learned when the engine speed (rpm) decreases back to idle speed and the procedure terminates. Read the trouble codes and recheck for DTC P1336. If DTC P1336 runs and passes, the CKP system variation "learn" procedure is complete. If not, look for other codes. If no codes are set, repeat the test procedure.

if they are 16inch tires I don't see a problem other than it may affect your speedo reading

That would be a shop manual - try Ebay for a used book.

check egr may be stuck open brake booster could have a leak internally. check pcv valve and all vacuum hoses for leak

Here is a very complete trouble fault table, where you may find the answer.

po785 is a shift/timing solenoid malfunction. po340 is a camshift position sensor A-Bank 1 circuit malfunction.

Answered.

There is not simple fix I am aware of, this almost always means the transmission has failed.

It just bolts to the body, easy

it should be on the fuel rail itself. with a vacuum hose coming out the top of it. befor you replace it make sure the wiring harness for the injectors is plugged into the main harness

See if you can find a box terminal or something that they have in common. If they are connected to a bus-bar or in a terminal box it is possible that they have gotten dirty or oxidized and all connected together. It has to be something that they all hook to. Good Luck!Gilllight

One thing to check into would be the antitheft system. Not knowing what year or type of vehicle makes it hard to help. But like i said, engine shut down in 5 seconds or less is a symptom of a bad antitheft security system. This link explains.http://vatspasslockpasskeysecurityhelp.yolasite.com/

Are they stuck on lock? Maybe you have a switch stuck or shorted out? Please rate my answer so I get points for it.

Call a locksmith, if you try to break in you will most likely do more damage than good and end up costing more than getting a pro to open it for you. This advice comes from 45 years of work experiences.

If the steering wheel is shaking when you apply the brakes, this is usually caused by the front rotors being warped, you can either replace the rotors (replace front brake pads as well) or if they measure thick enough, they may be able to be machined to recover a smooth - non warped surface again. Your local Auto Zone, Advance Auto Parts, or any other parts place usually can machine the rotors for you at a resonable price, but sometimes it is better to just replace them.... the thinner the get machined the less heat they will disapate and could possibly warp again after a few thousand miles.

Hope this helps

Yes you do have a security system. Its called passlock, and is more of an antitheft system than a security system. Actually you won't ever know you have it until someone tries to steal your vehicle or until it fails. Sounds like yours is failing. This link will help you understand the system and give you options to fix this yourself. http://vatspasslockpasskeysecurityhelp.yolasite.com/

Hello

The 6 flashes are not an Airbag fault code ...the flashes are only to alert the driver that a fault exists, in other words to get your attention to a failure of the SRS (supplemental restraint system) system - You will now need the system scanned with a special scanner that can read the codes in the Airbag/SRS system. This is not a generic scanner, it is a special tool, most repair shops will have one or of course the dealer. And any AIRBAG system fault shuts down the system, so if you get in an accident you will have no Airbag deployment.

You've already eliminated #3 and #6, so keep checking...

Priority Action Part Type Cause
1 Inspect Radiator Cooling System Clogged.
2 Inspect Radiator Radiator Fins Obstructed.
3 Inspect Radiator Cap Worn or Damaged Radiator Cap.
4 Inspect Radiator Fan Motor Faulty Fan Motor.
5 Inspect Belt Incorrectly Routed, Adjusted (Tensioned), Missing or Worn Drive Belt(s).
6 Inspect Thermostat Faulty Thermostat.
7 Inspect Water Pump Worn, Cracked or Leaking Water Pump.
8 Inspect Radiator Fan Relay Intermittent Failure

What is Simulating Overheating? it either is overheating, or its not. What engine do you have? What is the trouble code? DO NOT take the word of a parts store free code scan . The ECT is near the thermostat housing.

TIMMING CHAIN NEEDS TO B REPLACED AND MOTOR HAS TO BE RESET INTO TIMMING