Description
Factory Chevrolet Silverado Workshop Manual (1998–2007)
This is the official factory-level service manual for the first-generation GMT800 Chevrolet Silverado, covering every light-duty and heavy-duty pickup built between 1998 and 2007 — the same reference material used by Chevrolet-authorized service centers across the US.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Gasoline | 4.3L V6 Vortec (LU3), 4.8L V8 Vortec (LR4), 5.3L V8 Vortec (LM7, L59), 6.0L V8 Vortec (LQ4, LQ9), 8.1L V8 Vortec (L18) |
| Diesel | 6.6L Duramax V8 (LB7, LLY) |
| Transmissions | 4L60E 4-speed automatic, 4L80E 4-speed automatic, Allison 1000 5-speed automatic, NV3500 5-speed manual, NV4500 5-speed manual, ZF S6-650 6-speed manual |
| Drive | 2WD (RWD) and 4WD |
| Model Years | 1998–2007 |
| Badge Twins | GMC Sierra (GMT800 platform), Cadillac Escalade EXT (2002–2006) |
Common Silverado Repairs Covered
| System | Procedures |
|---|---|
| Intake Manifold Gaskets | Replacement of lower intake manifold gaskets on 5.3L and 6.0L Vortec V8s — a widespread failure point on this generation |
| 4L60E Transmission | Rebuild, fluid/filter service, solenoid replacement, and 3-4 clutch pack diagnosis |
| Brake System | Front and rear rotor/pad replacement, ABS module diagnosis, brake line inspection and bleeding procedures |
| Front Suspension & Steering | Upper and lower ball joint replacement, tie rod end service, torsion bar adjustment, and alignment specifications |
Format & Delivery
PDF. Instant download; lifetime re-downloads.
Frequently Asked Questions
Why do 5.3L Silverados commonly develop intake manifold leaks, and does the manual cover the fix?
The plastic lower intake manifold gaskets on the 5.3L and 6.0L Vortec V8s are prone to coolant and oil seepage, particularly on trucks built before 2003. The manual includes full step-by-step replacement procedures with torque sequences, updated gasket specifications, and intake cleaning guidelines — everything needed to complete the repair correctly.
Does this manual also apply to the GMC Sierra from the same era?
The GMT800 platform underpins both the Chevrolet Silverado and GMC Sierra (1999–2007), and the two share nearly identical engineering. While this manual is branded for the Silverado, the powertrain, suspension, brake, and electrical procedures are directly applicable to the Sierra in most cases.
Are cab configurations and trim levels — Regular Cab, Extended Cab, and Crew Cab — all covered?
Yes. The manual covers all body styles offered during the 1998–2007 production run, including Regular Cab, Extended Cab (3-door), and Crew Cab (4-door) configurations across Work Truck, LS, LT, and LTZ trim levels, for both 1500 and 2500/2500HD variants.
What format is the manual?
This manual is delivered as a fully searchable PDF file, compatible with Windows, Mac, Linux, iOS, and Android devices. Individual pages or complete chapters can be printed for bench-side reference. Your download is available immediately after purchase and can be re-downloaded at any time.
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