GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Express 🢒 General Information 🢒 General Information 🢒 Engine and Transmission Usage

Engine/RPO

Transmission/RPO

4.3L V6 Gasoline Engine (LU3)

4-Speed Automatic 4L60E (M30)

4-Speed Automatic HMD 4L80E (MT1)

4.8L V8 Gasoline Engine (LR4)

4-Speed Automatic 4L60E (M30)

4-Speed Automatic HMD 4L80E (MT1)

5.3L V8 Gasoline Engine (LM7)

4-Speed Automatic 4L60E (M30)

4-Speed Automatic HMD 4L80E (MT1)

6.0L V8 Gasoline Engine (LQ4)

4-Speed Automatic 4L60E (M30)

4-Speed Automatic HMD 4L80E (MT1)