Escalade, Suburban, Tahoe, Yukon, Denali, DenaliXL, YukonXL 1999-2005

Distributor

Print

4.8L, 5.3L, 6.0L and 8.1L engines use a distributorless ignition system.

Installation



4.3L, 5.0L, 5.7L And 7.4L Engines
Timing Disturbed
  1. Remove the No. 1 cylinder spark plug. Turn the engine using a socket wrench on the large bolt on the front of the crankshaft pulley. Place a finger near the No. 1 spark plug hole and turn the crankshaft until the piston reaches Top Dead Center (TDC). As the engine approaches TDC, you will feel air being expelled through the No. 1 cylinder spark plug hole. The timing mark on the crankshaft pulley should now be aligned with the 0 mark on the timing scale. If the position is not being met, turn the engine another full turn (360 degrees). Once the engines position is correct, install the spark plug.
    NOTE
    Before installation, position the rotor so it points to the No. 2 terminal on the cap. As the distributor is lowered into the engine, the rotor will rotate clockwise and stop at the No. 1 terminal. This is the desired position.

  2.  
  3. Turn the rotor so that it will point to the No. 1 terminal of the distributor cap when it is fully seated in the engine.
  4.  
  5. Install or connect the following:
    NOTE
    If the distributor will not seat completely in the engine, remove the distributor and align the groove on the top of the oil pump drive shaft with a long screwdriver to match the tab on the bottom of the distributor shaft. Reinstall the distributor.



    Distributor. It may be necessary to turn the rotor a little in either direction, in order to engage the gears.
     

  6.  
  7. Tap the starter a few times to ensure that the oil pump shaft is mated to the distributor shaft.
  8.  
  9. Bring the engine to TDC again and check that the rotor is pointed toward the No. 1 terminal of the cap. If the marks are all aligned.
  10.  
  11. Install or connect the following:

    Hold-down bolt and tighten
     
    Cap and fasten the mounting screws
     
    Electrical connections and the spark plug wires
     

  12.  

Timing Not Disturbed
  1. Install or connect the following:

    Distributor, aligning the matchmarks are properly alignment
     
    Distributor hold-down bolt
     
    Distributor cap
     
    Electrical connector at the base of the distributor
     
    Spark plug wires and coil leads
     
    Negative battery cable
     

  2.  

5.7L And 7.4L Engines
Timing Disturbed
  1. Remove the No. 1 cylinder spark plug. Turn the engine using a socket wrench on the large bolt on the front of the crankshaft pulley. Place a finger near the No. 1 spark plug hole and turn the crankshaft until the piston reaches TDC. As the engine approaches TDC, you will feel air being expelled through the No. 1 cylinder spark plug hole. The timing mark on the crankshaft pulley should now be aligned with the 0 mark on the timing scale. If the position is not being met, turn the engine another full turn (360 degrees) Once the engines position is correct, install the spark plug.
    NOTE
    Before installation, position the rotor so it points to the No. 2 terminal on the cap. As the distributor is lowered into the engine, the rotor will rotate clockwise and stop at the No. 1 terminal. This is the desired position.

  2.  
  3. Turn the rotor so that it will point to the No. 1 terminal of the distributor cap when it is fully seated in the engine.
  4.  
  5. Install the distributor. It may be necessary to turn the rotor a little in either direction, in order to engage the gears.
    NOTE
    If the distributor will not seat completely in the engine, remove the distributor and align the groove on the top of the oil pump drive shaft with a long screwdriver to match the tab on the bottom of the distributor shaft. Reinstall the distributor.

  6.  
  7. Tap the starter a few times to ensure that the oil pump shaft is mated to the distributor shaft.
  8.  
  9. Bring the engine to TDC again and check that the rotor is pointed toward the No. 1 terminal of the cap. Check that the marks are all aligned.
  10.  
  11. Install or connect the following:

    Hold-down bolt and tighten
     
    Cap and fasten the mounting screws
     
    Electrical connections and the spark plug wires
     

  12.  

Timing Not Disturbed
  1. Install or connect the following:

    Distributor, aligning the matchmarks properly
     
    Distributor hold-down bolt
     
    Distributor cap
     
    Electrical connector at the base of the distributor
     
    Spark plug wires and coil leads
     
    Negative battery cable
     

  2.  

Removal & Installation



4.3L, 5.0L, 5.7L, 7.4L Distributor
  1. Remove or disconnect the following:

    Negative battery cable
     
    Spark plug wires and the coil leads from the distributor
     
    Electrical connector at the base of the distributor
     
    Distributor cap
     

  2.  
  3. Matchmark the rotor-to-housing and housing-to-engine block positions so that they can be matched during installation.

    Distributor hold-down bolt
     
    Distributor from the engine
     

  4.  

5.7L And 7.4L Engines
  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:

    Negative battery cable
     
    Spark plug wires and the coil leads from the distributor
     
    Electrical connector at the base of the distributor
     
    Distributor cap
     

  4.  
  5. Matchmark the rotor-to-housing and housing-to-engine block positions so that they can be matched during installation.

    Distributor hold-down bolt
     
    Distributor from the engine
     

  6.  

 
label.common.footer.alt.autozoneLogo