Colorado 4WD L5-3.5L VIN 6 (2005)
Cylinder Liner: Technical Service Bulletins
Engine - New Cylinder Bore Sleeve Replacement Procedure
Bulletin No.: 04-06-01-022B
Date: October 24, 2005
SERVICE MANUAL UPDATE
Subject:
New Cylinder Bore Piston Sleeve Replacement Procedure
Models:
2004-2006 Buick Rainier
2002-2006 Chevrolet TrailBlazer
2004-2006 Chevrolet Colorado
2002-2006 GMC Envoy
2004-2006 GMC Canyon
2002-2004 Oldsmobile Bravada
with 2.8L, 3.5L or 4.2L Engine (VINs 8, 6, S - RPOs LK5, L52, LL8)
Supercede:
This bulletin is being revised to update model years, bulletin content, add parts information and the tool part number in the Warranty information and the
Cylinder Sleeve Trimming/Trim Tool Cutter information. Please discard Corporate Bulletin Number 04-06-01-022A (Section 06 - Engine/Propulsion
System).
A new procedure has been developed to replace the cylinder bore sleeves in the 2.8L, 3.5L and 4.2L engines. This procedure has been added to the
Service Manual in the Engine Mechanical sub-section. This procedure may be used when the engine is in or out of the vehicle.
Cylinder Bore Sleeve Removal
Note:
Do not chill or heat the cylinder bore sleeve or the cylinder block when removing or installing a new cylinder bore sleeve. Chilling or heating
the cylinder bore sleeve or the cylinder block will cause engine damage and will not aid the removal or installation of the new cylinder bore
sleeve.
Note:
Do not damage the crankshaft connecting rod journals or reluctor ring or engine damage will occur.
1.
If the crankshaft is still installed, rotate the crankshaft so that the counterweight is to the right side and the connecting rod journal is to the left side
and not in alignment with the cylinder bore.
