2004 Chevrolet Aveo 1.2L Engine Mechanical Service Manual (P/N 96432262)

This official 100-page General Motors publication supports the 2004 Chevrolet Aveo equipped with the 1.2L L-4 engine. It delivers precise mechanical, electrical, and timing specifications directly to your workbench.

• Details exact engine mechanical standards, fasteners, and internal clearances for the 96432262 unit.
• Features 82 exploded-view diagrams and 35 fastener torque tables. These are crucial for engine internal maintenance and complete component overhauls.
• Outlines complete assembly clearances and tightening parameters for the entire engine block and cylinder head configuration.

Note that handling heavy engine components and pressurized fluid systems requires caution. Always verify your specific vehicle build and ensure you have the appropriate mechanical background before tearing down the engine.

Engine Mechanical Overview

The manual organizes complex mechanical data into practical sections geared toward engine assembly and diagnostic verification. You get a clear look at the internal structure. Content covers the cylinder head, timing belt, intake manifold, and oil pan. Each section maps out component-specific teardown and installation logic. Detailed diagrams of the valve train, crankcase, and timing system support the text. The manual also provides targeted mechanical diagnostics. This helps technicians efficiently troubleshoot abnormal engine noise, oil pressure fluctuations, and compression issues right in the service bay.

Precision Data and Specifications

Accurate reference values are non-negotiable for engine internal maintenance. This publication details rod and main bearing clearances, valve stem dimensions, and exact seat angles. Cylinder head bolt tightening, for instance, follows a strict multi-stage sequence. Final torque values are documented at 65–70 N.m (48–52 lb ft). Crankshaft main bearing clearance is tightly specified at 0.020–0.040 mm (0.0008–0.0016 in). You also get critical baseline metrics. Oil pressure minimums are listed at 30 kPa (8.88 psi) at idle and 250 kPa (35 psi) at 2000 RPM, while cold intake valve clearance is set at 0.15 +/- 0.02 mm.