2004 Chevrolet Aveo 1.2L Engine Mechanical Service Manual

2004 Chevrolet Aveo 1.2L Engine Technical Documentation

• This technical publication supports the 2004 Chevrolet Aveo equipped with the 1.2L L-4 engine, providing precise mechanical and service specifications for the factory-spec power plant.
• Official General Motors publication documenting engine mechanical standards, fasteners, and internal clearances for the 96432262 unit.
• Contains 82 exploded-view diagrams and 35 fastener torque tables required for engine internal maintenance and component overhaul.
• Full-text search finds any part number in seconds.
• OCR text layer lets you jump to a torque spec by keyword.
• This document serves as the authorized reference for 2004 Chevrolet Aveo 1.2L engine mechanical work, detailing the exact assembly clearances and tightening parameters for the complete engine block and cylinder head configuration.

Engine Mechanical Scope

The 2004 Chevrolet Aveo service manual organizes mechanical data into detailed sections concerning engine assembly and diagnostic verification. The content includes comprehensive breakdown and assembly procedures for critical components such as the cylinder head, timing belt, intake manifold, and oil pan. Each section outlines component-specific removal and installation logic, integrated with diagrams of the valve train, crankcase, and timing system components. Mechanical diagnostics are provided for symptoms related to abnormal engine noise, oil pressure fluctuations, and compression testing.

Precision Data and Specifications

This manual provides specific reference values for engine internal maintenance, including rod and main bearing clearances, valve stem dimensions, and seat angles. Cylinder head bolt tightening follows a multi-stage sequence, with final torque values documented at 65–70 N.m (48–52 lb ft). Crankshaft main bearing clearance is specified at 0.020–0.040 mm (0.0008–0.0016 in). Oil pressure minimums are listed at 30 kPa (8.88 psi) at idle and 250 kPa (35 psi) at 2000 RPM. Intake valve clearance, cold, is documented at 0.15 +/- 0.02 mm. A deeper look at what an OEM service publication covers provides further insight into the technical structure of this manual.

Reference only — always consult a certified technician before performing service on this equipment. This official 100-page Chevrolet workshop manual covers the 2004 Chevrolet Aveo, documenting engine, mechanical, timing, and electrical assembly specifications for the 1.2L Aveo build.