Vehicle

Chevrolet S-10

The compact pickup, sold with only a badge between it and the GMC Sonoma and Isuzu Hombre, so all three names are worth searching. Note that the S-10 Blazer is the SUV on the same platform and has its own page — a great deal of what is written about "an S-10" is actually about the Blazer, and the running gear is shared but the bodies and their faults are not. The 4.3 Vortec's central injection assembly is the defining fault: a single spider-shaped unit feeding poppet nozzles down the intake, which leaks internally as it ages and produces long cranking, a rich condition and misfires that read like almost anything else. Established, well documented, and worth eliminating early on any 4.3 of these years.

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Chevrolet S-10 extended cab — Bull-Doser · Public domain (external)

Generations

Second generation 1994–2004

The 4.3 Vortec V6 and its spider central injection; identical to the GMC Sonoma.
Body styles

Pickup

Platform

GM GMT325
Engines
4.3 V6 — L35 · petrol · 134–145 kW (180–195 hp) · 332–353 Nm (245–260 lb-ft) · Vortec, central injection

2.2 four-cylinder — LN2 · petrol · 176–190 Nm (130–140 lb-ft)

1.95 — LR1 · petrol

2.0 — LQ2 · petrol

2.5 — L38 · petrol

2.8 — LR2 · petrol

2.2 — LQ7 · diesel

4.3 V6 — LB4 · petrol · 116–123 kW (155–165 hp) · 319 Nm (235 lb-ft)
Transmissions

3-speed THM-200C automatic · 4-speed Isuzu S101 manual · 4-speed BorgWarner T4 manual · 4-speed 700R4 automatic · 4-speed 4L60 automatic · 4-speed 4L60-E automatic · 5-speed Getrag 290 manual · 5-speed 5LM60 manual · 5-speed NV3500 manual · 5-speed BorgWarner T5 manual · 5-speed NV1500 manual

Drivetrain

Rear-wheel drive · Four-wheel drive

Service information

ACDelco Technical Delivery System (TDS) (external) — Workshop literature

Information, not instruction

CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.

Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.

Posted about the Chevrolet S-10

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The car — make, model, year and engine. The same fault behaves differently on each.
What you measured, not only what you replaced.
What actually fixed it — or that nothing did, which is worth knowing too.