GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2004 🢒 TopKick C-Series (Conventional) C4/C5 🢒 Engine 🢒 Engine Controls - 6.6L (LLY) 🢒 Crankshaft Position Sensor Replacement

Removal Procedure

    Object Number: 1335470 Size: SH
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Remove the charge air pipe on the right bank of the engine. Refer to Charged Air Cooler Hoses/Pipes Replacement for the 6.6L (LLY) engine.
  3. Disconnect the crankshaft position (CKP) sensor electrical connector.

    4. Object Number: 1336119 Size: SH
  4. Remove the CKP sensor bolt .
  5. Remove the CKP sensor.
  6. If necessary, remove the CKP sensor spacer bolts.
  7. If necessary, remove the CKP sensor spacer.

Installation Procedure

    Object Number: 1336119 Size: SH
  1. If necessary, lubricate a NEW CKP spacer O-ring with clean engine oil.
  2. If necessary, install the NEW O-ring to the CKP sensor spacer.

    3. Important: The crankshaft position sensor spacers are machined with different timing positions. However, if the crankshaft position sensor spacer requires replacement, replace with a grade "C" spacer.

    Notice: Refer to Fastener Notice in the Preface section.

  3. If necessary, install the CKP sensor spacer.
  4. If necessary, install the CKP sensor spacer bolts.

    5. Tighten
    Tighten the bolts to 10 N·m (89 lb in).

  5. Lubricate a NEW CKP sensor O-ring with clean engine oil.
  6. Install the NEW O-ring to the CKP sensor.
  7. Install the CKP sensor.
  8. Install the CKP sensor bolt.

    9. Tighten
    Tighten the bolt to 10 N·m (89 lb in).


    Object Number: 1335470 Size: SH
  9. Connect the CKP sensor electrical connector.
  10. Install the charge air pipe on the right bank of the engine. Refer to Charged Air Cooler Hoses/Pipes Replacement for the 6.6L (LLY) engine.
  11. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .