GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Optra 🢒 Engine 🢒 Engine Electrical 🢒 Symptoms - Vehicle

HVAC
    •  Symptoms - HVAC Systems - Automatic
    •  Symptoms - HVAC Systems - Manual

Steering
    •  Symptoms - Power Steering System
    •  Symptoms - Steering Wheel and Column

Suspension

Symptoms - Suspension General Diagnosis

Brakes

Symptoms - Antilock Brake System

Engine
    •  Symptoms - Engine Mechanical for the 1.4L DOHC engine
    •  Symptoms - Engine Mechanical for the 1.6L engine
    •  Symptoms - Engine Mechanical for the 1.8L (L79) engine
    •  Symptoms - Engine Mechanical for the 1.8L (LDA) engine
    •  Symptoms - Engine Mechanical for the 2.0L (Diesel) engine
    •  Symptoms - Engine Mechanical for the 2.0L (L34 GMDAT) engine
    •  Symptoms - Engine Cooling
    •  Symptoms - Engine Electrical
    •  Symptoms - Engine Controls for the 1.4L DOHC engine
    •  Symptoms - Engine Controls for the 1.6L engine
    •  Symptoms - Engine Controls for the 1.8L (L79) engine
    •  Symptoms - Engine Controls for the 1.8L (LDA) engine
    •  Symptoms - Engine Controls for the 2.0L (Diesel) engine
    •  Symptoms - Engine Controls for the 2.0L (L34 GMDAT) engine
    •  Symptoms - Engine Exhaust

Transmission/Transaxle
    •  Symptoms - Manual Transmission for the D16 manual transmission
    •  Symptoms - Manual Transmission for the D20 manual transmission
    •  Symptoms - Manual Transmission for the D33 manual transmission
    •  Symptoms - Automatic Transmission for the Aisin 55-51LE automatic transmission
    •  Symptoms - Automatic Transmission for the Aisin 81-40LE automatic transmission
    •  Symptoms - Automatic Transmission for the ZF 4HP 16 automatic transmission
    •  Symptoms - Clutch

Body Systems
    •  Symptoms - Lighting Systems
    •  Symptoms - Vehicle Access
    •  Symptoms - Wiper/Washer Systems

Safety and Security
    •  Symptoms - Keyless Entry
    •  Symptoms - Immobilizer
    •  Symptoms - Seat Belts
    •  Symptoms - SIR
    •  Symptoms - Theft Deterrent

Driver Information and Entertainment
    •  Symptoms - Entertainment
    •  Symptoms - Displays and Gages

Power and Signal Distribution

Symptoms - Data Communications

Roof

Symptoms - Roof