Saturn Sky 2007–2009 2.0L & 2.4L Service & Repair Manual Set

The service sections support workshop diagnosis and repair, while the owner's manuals cover vehicle operation, owner checks, and scheduled maintenance. The supplementary references cover different vehicles or general service methods.

Coverage limits: The engine and main chassis/electrical sections are labeled 2007; the 2009 workshop material consists of the four body/trim excerpts listed above. The Ion/LSJ engine-control references are supplementary and do not provide Sky LNF engine-control diagnostic procedures.

PDF Search, Bookmarks and Wiring Detail

Text search and diagram detail: Service text and owner's manuals are searchable, but many diagram and reference-chart labels require visual lookup. In WIRING.pdf, search mainly covers headings and captions. The two trouble-code PDFs have no text search. The three owner's manuals have chapter bookmarks; the four 2009 body/trim PDFs have numbered bookmarks. Other PDFs have no embedded bookmarks. Small wiring labels require zooming.

The ZIP download contains 68 printable PDFs totaling 7,472 pages: 5,440 pages of Sky service and owner's material plus 2,032 supplementary reference pages. Front matter, contents pages, indexes, and supplementary documents are already included in these totals. A separate WMV video is also included and adds no PDF pages.

Engine, Chassis and Electrical Repair

These selected topics illustrate the coverage rather than reproduce the complete contents. Other sections include cruise-control diagnosis and wiper/washer service.

• Engine repair: Mechanical diagnosis and step-by-step procedures for in-vehicle repairs, engine removal, cylinder-head service, internal inspection, and reassembly for the LNF and LE5 engines.

• Timing systems: Camshaft chains, guides, tensioners, intake and exhaust camshaft-position actuators, and balance-shaft drive-chain removal and installation.

• Transmission and driveline: Aisin AR5 teardown and assembly, clutch hydraulic service, rear-axle and drive-shaft repair, and automatic-transmission pressure and symptom diagnosis.

• Brakes and steering: ABS automated bleeding, disc-brake and caliper repair, hydraulic brake diagnosis, power-steering testing and bleeding, and steering-column service.

• Cooling and HVAC: Cooling-fan diagnosis, thermostat and water-pump service, refrigerant leak testing, recovery and recharging, and compressor replacement.

• Electrical diagnosis: Vehicle wiring diagrams, connector end views, component locations, scan-tool data, starting and charging tests, and lighting troubleshooting.

• Suspension and body: Base and sport front-suspension procedures, wheel-bearing replacement, folding-top adjustment, window alignment, and interior and exterior trim repair.

The workshop sections are suited to technicians and experienced repairers equipped for scan-tool diagnosis, precision measurement, engine lifting, and torque-angle tightening.

Engine Diagnosis and Internal Repair

The mechanical troubleshooting charts connect reported symptoms with targeted checks before engine disassembly. They distinguish misfires accompanied by lower-engine or valvetrain noise from coolant loss, oil consumption, turbocharger noise or leakage, and a locked crankshaft. Tests cover compression, cylinder leakage, lubrication pressure, and crankcase ventilation.

Cylinder-head work reaches the camshafts, roller followers, hydraulic lash adjusters, valve springs, and stem seals, with bench inspection after disassembly. The balance-shaft chain instructions also cover its connection to the water-pump drive.

LNF turbocharger replacement identifies the oil-feed, oil-return, and coolant connections. In-vehicle repairs also cover the intake manifold, engine front cover, crankshaft seals, oil cooler, and mounts.

LNF engine removal is documented separately for manual- and automatic-transmission vehicles. Internal work includes cylinder honing, sleeve replacement, piston and connecting-rod inspection, crankshaft-bearing service, and oil-pump disassembly.

Fasteners, Materials and Illustrated Assemblies

Fastener specifications distinguish initial tightening passes from final angle settings. The mechanical tables include bore measurements, bearing clearances, piston and ring dimensions, valve and guide inspection limits, and lubrication data.

Material-selection charts pair applications with the specified sealant, lubricant, or anti-seize compound and its GM part number. Thread-repair information links block, lower-crankcase, and cylinder-head bolt holes to insert sizes and drilling and tapping depths. Engine-identification references help match these details to the engine being serviced.

Illustrated references include Cylinder Head and Components, Intake Manifold and Components, Engine Block and Components, and Timing Chain and Components. Cylinder Head Bolt Tightening Sequence and Lubrication System figures show fastening order and oil routing.

Tools and Component Service Limits

LNF tool references include the EN 45680-850 cylinder-liner kit, J 43650 balance-shaft bearing tool, EN-48266 injector-seal installer and sizer, J 45059 angle meter, and J 45299 engine preluber. Fuel-rail and injector coverage extends from removal through inspection to installation. The turbocharger is serviced as a complete assembly.

The sleeve instructions warn that heating or chilling the sleeve/block, or using assembly aids during installation, can damage the engine. A separate crankshaft-balancer caution addresses engine damage from misalignment with the oil-pump drive.

Review the lifting and high-pressure fuel cautions before the work they cover.

Transmission, Chassis and Circuit Diagnosis

Transmission scope: AR5 coverage extends to bearing and synchronizer inspection and selective retaining-ring specifications. The automatic-transmission section, titled 5L40-E/5L50-E, concentrates on shift complaints, torque-converter diagnosis, line-pressure checks, solenoid leak testing, and cooler service; it is not a complete automatic-transmission overhaul manual.

Vehicle systems: Rear-axle material distinguishes limited-slip diagnosis and seal service. Separate sections address SIR airbags and passenger-presence testing. Folding-top procedures reach the bows, latches, tension cables, weatherstrips, and adjustment points.

Cooling and A/C variants: The cooling and HVAC files distinguish LNF and LE5 thermostat, water-pump, compressor, and refrigerant-line procedures. Cooling-system leak and pressure-cap tests support diagnosis before component replacement.

Circuit tracing: Sky wiring covers engine-performance, ABS, starting/charging, HVAC, and power-distribution circuits. LNF and LE5 pin assignments in the starting/charging and ABS diagrams help identify the correct connections before electrical testing.

Supplementary ECOTEC References

The separate ECOTEC reference folder contains supercharged LSJ (VIN P) mechanical material, Ion engine-control diagnostics, and general service articles.

The LSJ/Cobalt/Ion booklet contains background material and part of the engine-removal chapter. Reinstallation, upgrade-kit, performance-clutch, and race-engine chapters listed in its contents are outside this excerpt.

AR5 Gear and Synchronizer Specification Preview

For AR5 first-gear axial clearance, the tables distinguish a standard range of 0.20–0.45 mm from the 0.50 mm maximum. Illustrated measurement procedures accompany the gear inspection and assembly material.

The synchronizer inspection data specify a minimum blocker-ring-to-gear clearance of 0.8 mm for first through fourth gears, alongside separate sleeve-to-shift-fork limits and selective retaining-ring tables.