For 1990-2009 cars

# Engine Tick Noise (Replace Valve Lifters)

Subject: | Engine Tick Noise (Replace Valve Lifters)

Models: | 1999-2003 Chevrolet Tracker

| with 2.0L or 2.5L Engine (VINs C, 4 -- RPOs L34, LE8)

This bulletin is being revised to correct the quantities required in the Part Information. Please discard Corporate Bulletin Number 00-06-01-006C (Section 06 -- Engine/Propulsion System).

### Condition

Some customers may comment on a tick type noise coming from the engine while the engine is running during cold or hot operation. The condition will be most noticeable on vehicles that have been stored for extended periods of time without running the engine or on vehicles following a repair to the valve lifters and camshafts.

### Cause

This condition may be caused by oil drain down. Air may get trapped in the valve lifters, not allowing for proper lifter adjustment. This condition may also be referred to as "lifter bleed down".

### Correction

Replace the valve lifters with P/N 25178085. Refer to the Lifter Replacement procedure in the Engine Mechanical sub-section of the service manual.

### Part Information

Part Number | Description | Qty
--- | --- | ---
25178085 (L34 Engine) | Lifter, Valve | 16
25178085 (LE8 Engine) | Lifter, Valve | 24

Parts are currently available from GMSPO.

### Warranty Information

For vehicles repaired under warranty, use:

Labor Operation | Description | Labor Time
--- | --- | ---
J0632 (L34 Engine) | Lifter, Valve -- Both -- Replace | 6.8 hrs
Add A: | With A/C | 0.7 hr
Add B: | To Replace All Lifters | 0.2 hr
Add C: | To Clean Parts Over 30,000 Miles (48,000 km) | 0.3 hr
Add D: | With 4 Wheel Drive | 1.6 hrs
J0627 (LE8 Engine) | Lifter, Valve -- One Cylinder -- Both Banks -- Replace | 8.1 hrs
Add B: | To Replace All Lifters | 0.2 hr
Add C: | To Clean Parts Over 30,000 Miles (48,000 km) | 0.3 hr
Add D: | With 4 Wheel Drive | 2.2 hrs