The service and repair manual for the 2003 GMC Sonoma — 2.2L I4 and 4.3L V6 engines, 5 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 | 2003 |
|---|---|
| Engines | 2.2L I4 — 134 cu in, OHV 4.3L V6 — OHV |
| Trims | SLS Crew Cab Pickup 4-Door · SLS Extended Cab Pickup 3-Door · SL Extended Cab Pickup 3-Door · SL Standard Cab Pickup 2-Door · SLS Standard Cab Pickup 2-Door |
| Federal record | 1 recall · 53 complaints · 199 technical service bulletins (refreshed 2026-08-21) |
02 / InsideSample pages from the 2003 Sonoma manual
03 / ContentsSections in the manual
- Quick Lookups 416
- Engine Performance 1,836
- Accessories & Equipment 2,526
- General Information 2,048
- Body & Frame 1,573
- Heating, Ventilation & A/C (HVAC) 220
- Brakes 439
- Restraints 544
- Drivelines & Axles 813
- Steering 270
- Electrical 1,792
- Suspension 155
- Engine Mechanical 528
- Transmission 961
04 / Known issuesRecalls on federal record for the 2003 Sonoma
- Equipment — other › labels · 04V132000Some of these vehicles include incorrect statements on one of the air bag warning labels.
Owners have filed 53 complaints and GMC has issued 199 technical service bulletins for the 2003 Sonoma. The manual carries the manufacturer's diagnostic and repair procedures behind these systems.
FAQQuestions about the 2003 Sonoma manual
Is this manual specific to the 2003 Sonoma?
Yes. It is the OEM manual matched to the 2003 model year, covering the 2.2L I4 and 4.3L V6 across the SLS Crew Cab Pickup 4-Door, SLS Extended Cab Pickup 3-Door, SL Extended Cab Pickup 3-Door, SL Standard Cab Pickup 2-Door, SLS Standard Cab Pickup 2-Door trims. Specifications and procedure sequences are the ones GMC published for this year.
What 2003 Sonoma problems does it help with?
1 recall is on federal record for the 2003 Sonoma, covering equipment. 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 2003 Sonoma wiring diagrams?
Yes — the complete wiring diagrams for the 2003 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 Sonoma years and 2003 GMC models
2004 Sonoma · 2002 Sonoma · 2001 Sonoma · 2000 Sonoma · 1999 Sonoma · 1998 Sonoma · 1997 Sonoma · all 14 years
2003 GMC C4500 Topkick · 2003 GMC C5500 Topkick · 2003 GMC C6500 Topkick · 2003 GMC C7500 Topkick · 2003 GMC C8500 Topkick · 2003 GMC Envoy · 2003 GMC Envoy XL · 2003 GMC Jimmy · 2003 GMC Safari · 2003 GMC Savana 1500 · 2003 GMC Savana 2500 · 2003 GMC Savana 3500 · every 2003 model