I need change cransaft sensor

Hi,

Have you checked to see if the if the diagnostic trouble code indicates the mass air flow sensor (MAF)? Also, your heading cransaf sensor. Do you mean crankshaft or camshaft sensor?

Here are the directions for replacing the MAF sensor.

2006 Chevy Truck Express 1500 RWD V8-5.3L VIN T
Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor Replacement
Vehicle Powertrain Management Sensors and Switches - Powertrain Management Sensors and Switches - Computers and Control Systems Air Temperature Sensor ( Ambient / Intake ) Service and Repair Removal and Replacement Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor Replacement
MASS AIR FLOW (MAF)/INTAKE AIR TEMPERATURE (IAT) SENSOR REPLACEMENT
MASS AIR FLOW (MAF)/INTAKE AIR TEMPERATURE (IAT) SENSOR REPLACEMENT

REMOVAL PROCEDURE

IMPORTANT: Take care when handling the mass air flow/ intake air temperature (MAF/IAT) sensor. Do not dent, puncture, or otherwise damage the honeycell located at the air inlet end of the MAF/IAT. Do not touch the sensing elements or allow anything including cleaning solvents and lubricants to come in contact with them. Use a small amount of a non-silicone based lubricant, on the air duct only, to aid in installation. Do not drop or roughly handle the MAF/IAT sensor.

1. Disconnect the MAF/IAT sensor electrical connector.
2. Remove the air cleaner assembly.
3. Loosen the clamp securing the MAF/IAT sensor to the air cleaner duct.
4. Remove the MAF/IAT sensor bolts from the air cleaner assembly.
5. Remove the MAF/IAT from the air cleaner.

INSTALLATION PROCEDURE

IMPORTANT: The embossed arrow on the MAF/IAT sensor indicates the proper air flow direction. The arrow must point toward the engine.

Pic 1

1. Locate the air flow direction arrow (2) on the MAF/IAT sensor.
2. Install the MAF/IAT sensor onto the air cleaner housing.
3. Install the MAF/IAT sensor retaining bolts.

NOTE: Refer to Fastener Notice in Service Precautions.

Tighten the bolts to 11 N.M (97 lb in).

4. Tighten the clamp securing the MAF/IAT sensor to the air cleaner duct.
5. Install the air cleaner assembly.
6. Connect the MAF/IAT electrical connector.

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Let me know if this is what you needed or if you have other questions. If it is the crankshaft or camshaft sensors you need help with, let me know.

Take care,
Joe

If the check engine light is flashing then there is a major issue happening that is causing potential damage to the engine and/or exhaust.

Let's start with getting the codes and go from there. The codes will tell us what the issue is and if the cam sensor or MAF are an issue. However, these are usually not the cause of a flashing check engine light. Let me know. Thanks