Vehicle

Chevrolet Silverado

GM's full-size pickup. Active Fuel Management cylinder deactivation is the standing diagnostic theme — lifter failures announce themselves as misfire codes on specific cylinders, and the corpus's advice about identifying the pattern before replacing parts earns its keep here.

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Chevrolet Silverado — Elise240SX · CC BY-SA 4.0 (external)

Generations

GMT800 1999–2007

Vortec V8s, largely conventional; fuel-level sender and evap codes at age.
- Duramax (badge, not an engine)
Body styles

Pickup

Platform

GMT800
Engines
4.3 V6 — petrol · 142 kW (190 hp)

4.8 V8 — petrol · 190–213 kW (255–286 hp) · 386–400 Nm (285–295 lb-ft)

5.3 V8 — petrol · 201–231 kW (270–310 hp) · 427–454 Nm (315–335 lb-ft)

6.0 V8 — petrol

8.1 V8 — L18 · petrol

6.6 Duramax V8 — diesel

6.0 — CNG bi-fuel · 8-cylinder, US market 2003-2005
Transmissions

Allison 5-speed automatic · 4-speed 4L80-E automatic · 5-speed Allison 1000 automatic · 6-speed Allison 1000 automatic · 5-speed NV4500 manual · 6-speed ZF S6-650 manual

Drivetrain

Rear-wheel drive · Four-wheel drive
GMT900 2007–2014

AFM arrives at volume — the lifter-and-misfire era begins.
- 4L80-E / 4L85-E 4-speed automatic
- Allison 1000 automatic
Body styles

Pickup

Platform

GMT900
Engines
4.3 V6 — petrol

4.8 V8 — LY2 · petrol

5.3 V8 — LY5 · petrol

6.0 V8 — petrol

6.2 V8 — petrol

6.6 Duramax V8 — diesel
Transmissions

Allison 6-speed automatic · 4-speed 4L80-E automatic · 5-speed Allison 1000 automatic

Drivetrain

Rear-wheel drive · Four-wheel drive
K2XX 2014–2018

Direct injection joins AFM; both patterns now in play.
Body styles

Pickup

Platform

GM K2XX
Engines
4.3 V6 — LV3 · petrol · 213 kW (286 hp) · 414 Nm (305 lb-ft)

5.3 V8 — L83 · petrol · 265 kW (355 hp) · 519 Nm (383 lb-ft)

6.2 V8 — L86 · petrol · 313 kW (420 hp) · 624 Nm (460 lb-ft)

6.6 Duramax V8 — diesel · 296–332 kW (397–445 hp) · 1037–1234 Nm (765–910 lb-ft)

6.0 V8 — LY6 · petrol

6.0 V8 — L96 · petrol · 268 kW (360 hp) · 515 Nm (380 lb-ft)
Transmissions

Allison 6-speed automatic · 6-speed 6L80 automatic · 6-speed 6L90 automatic · 8-speed 8L90 automatic · 6-speed Allison 1000 automatic

Drivetrain

Rear-wheel drive · Four-wheel drive
T1XX 2019–present

Dynamic Fuel Management and the 3.0 Duramax diesel option.
Body styles

Pickup

Platform

GM T1XX
Engines
4.3 V6 — LV3 · petrol · 213 kW (286 hp) · 414 Nm (305 lb-ft)

2.7 turbo four-cylinder — L3B · petrol · 231 kW (310 hp) · 472–569 Nm (348–420 lb-ft)

5.3 V8 — L84 · petrol · 265 kW (355 hp) · 519 Nm (383 lb-ft)

6.2 V8 — L87 · petrol · 313 kW (420 hp) · 624 Nm (460 lb-ft)

3.0 Duramax straight-six — LM2 · diesel · 207 kW (278 hp) · 624 Nm (460 lb-ft)

6.6 Duramax V8 — L5P · diesel · 332–350 kW (445–470 hp) · 1234–1322 Nm (910–975 lb-ft)
Transmissions

Allison 10-speed automatic · 6-speed MYC 6L80 Automatic · 6-speed 6L90 automatic · 8-speed 8L90 automatic

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.

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