Distributor Installation

2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8SECTION Distributor Installation
WARNING: This page is about a different variant/trim than selected.

Important:Β  The engine front cover has 2 alignment tabs and the crankshaft balancer has 2 alignment marks (spaced 90 degrees apart) which are used for positioning number 1 piston at top dead center (TDC). With the piston on the compression stroke and at top dead center, the crankshaft balancer alignment mark (1) must align with the engine front cover tab (2) and the crankshaft balancer alignment mark (4) must align with the engine front cover tab (3).

  1. Rotate the crankshaft balancer clockwise until the alignment marks on the crankshaft balancer are aligned with the tabs on the engine front cover and the number 1 piston is at top dead center of the compression stroke.
    Fig 1: Crankshaft Balancer Alignment Mark
    G02503123Courtesy of GENERAL MOTORS CORP.
  2. Remove the distributor cap bolts and discard.
  3. Remove the distributor cap.
    Fig 2: Distributor Cap
    G02503124Courtesy of GENERAL MOTORS CORP.
  4. Install a NEW distributor gasket onto the distributor.
    Fig 3: Distributor Gasket
    G02503125Courtesy of GENERAL MOTORS CORP.
  5. Align the indent hole on the driven gear with the paint mark on the distributor housing.
  6. Fig 4: Aligning Indent Hole On Driven Gear With Paint Mark On Distributor Housing
    G02503126Courtesy of GENERAL MOTORS CORP.
  7. Ensure that the distributor rotor segment points to the cap hold area.
  8. Align the slotted tang in the oil pump driveshaft with the distributor driveshaft. Rotate the oil pump driveshaft with a screwdriver if necessary.
  9. Align the flat (1) in the distributor housing toward the front of the engine.
    Fig 5: Aligning Flat In Distributor Housing Toward Front Of Engine
    G02503127Courtesy of GENERAL MOTORS CORP.
  10. Install the distributor and distributor clamp. The flat in the distributor housing must point toward the front of the engine.
  11. Once the distributor is fully seated, align the distributor rotor segment with the number 6 pointer (1) that is cast into the distributor base. If the distributor rotor segment does not come within a few degrees of the number 6 pointer (1), the gear mesh between the distributor and camshaft may be off a tooth or more. Repeat the procedure again in order to achieve proper alignment.
    Fig 6: Aligning Distributor Rotor Segment With No. 6 Pointer On Distributor Base
    G02503129Courtesy of GENERAL MOTORS CORP.
  12. Install the distributor clamp bolt. Tighten the distributor clamp bolt to 25 N.m (18 lb ft).
  13. Install the distributor cap and NEW distributor cap bolts. Tighten the distributor cap bolts to 2.4 N.m (21 lb in ).
  14. Install the ignition coil wire harness.
    Fig 7: Ignition Coil Wire
    G02503132Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.