The service and repair manual for the 1999 GMC Sierra 2500 — 6.0L V8 and 5.3L V8 engines, 8 trims. Matched to this exact model year, so the specifications and sequences are the ones GMC published for your car, not figures carried over from a neighbouring year.
01 / FitmentWhat this manual covers
| Model year | 1999 |
|---|---|
| Engines | 6.0L V8 — 364 cu in, OHV 5.3L V8 — 325 cu in, OHV |
| Trims | SLE Extended Cab Pickup 3-Door · SLT Cab & Chassis 2-Door · SLT Extended Cab Pickup 3-Door · SL Cab & Chassis 2-Door · SL Extended Cab Pickup 3-Door · SLE Cab & Chassis 2-Door +2 |
| Federal record | 2 recalls · 42 complaints · 19 technical service bulletins (refreshed 2026-08-21) |
02 / InsideSample pages from the 1999 Sierra 2500 manual
03 / ContentsSections in the manual
- Quick Lookups 101
- General Information 1,754
- Accessories & Equipment 907
- Heating, Ventilation & A/C (HVAC) 445
- Body & Frame 300
- Maintenance 53
- Brakes 466
- Restraints 156
- Drivelines & Axles 172
- Steering 510
- Electrical 454
- Suspension 74
- Engine Mechanical 187
- Transmission 511
- Engine Performance 10,423
- Front 165
- Radiator Cap Pressure 15
04 / Known issuesRecalls on federal record for the 1999 Sierra 2500
- Equipment · 07E088000This condition may cause inadequate sealing and loss of engine oil, possibly resulting in a fire.
- Fuel System, Gasoline · 06E043000This condition may cause an inadequate seal at the connection, potentially leading to a fuel leak. i.
Owners have filed 42 complaints and GMC has issued 19 technical service bulletins for the 1999 Sierra 2500. The manual carries the manufacturer's diagnostic and repair procedures behind these systems.
FAQQuestions about the 1999 Sierra 2500 manual
Is this manual specific to the 1999 Sierra 2500?
Yes. It is the OEM manual matched to the 1999 model year, covering the 6.0L V8 and 5.3L V8 across the SLE Extended Cab Pickup 3-Door, SLT Cab & Chassis 2-Door, SLT Extended Cab Pickup 3-Door, SL Cab & Chassis 2-Door, SL Extended Cab Pickup 3-Door, SLE Cab & Chassis 2-Door, SL Standard Cab Pickup 2-Door, SLE Standard Cab Pickup 2-Door trims. Specifications and procedure sequences are the ones GMC published for this year.
What 1999 Sierra 2500 problems does it help with?
2 recalls are on federal record for the 1999 Sierra 2500, covering equipment, fuel system, gasoline. The manual carries the manufacturer's diagnostic and repair procedures for those systems; the recall repairs themselves are done free by GMC dealers.
Does it include 1999 Sierra 2500 wiring diagrams?
Yes — the complete wiring diagrams for the 1999 build, alongside repair procedures, specifications and diagnostics.
Is it a subscription?
No. $29.99 once and the manual is yours. It is a digital manual — nothing ships; access details arrive by email after checkout and it works on any device.
RelatedOther Sierra 2500 years and 1999 GMC models
2004 Sierra 2500 · 2003 Sierra 2500 · 2002 Sierra 2500 · 2001 Sierra 2500 · 2000 Sierra 2500 · all 6 years
1999 GMC B7 · 1999 GMC C1500 · 1999 GMC C1500 Suburban · 1999 GMC C2500 · 1999 GMC C2500 Suburban · 1999 GMC C3500 · 1999 GMC C3500HD · 1999 GMC C6500 Topkick · 1999 GMC C7500 Topkick · 1999 GMC Jimmy · 1999 GMC K1500 · 1999 GMC K1500 Suburban · every 1999 model