2020 Chevrolet Express 3500 Service and Repair Manual

This factory service and repair manual for the 2020 Chevrolet Express 3500 accounts for six bodies: three-door cargo and passenger vans in standard and extended lengths, a four-door standard cargo van, and the two-door cutaway. The engine choice is a 4.3L V6 on gasoline or flex-fuel, a 6.0L V8 configurable for gasoline, natural gas or flex-fuel, and a turbocharged 2.8L inline-four diesel. Base, LS and LT sit above that, and the manual treats each fuel arrangement as its own set of procedures.

Engines covered

• 4.3L V6 (262 cu in) — OHV, naturally aspirated, flex-fuel or gasoline
• 6.0L V8 (364 cu in) — OHV, naturally aspirated, gasoline or CNG or flex-fuel
• 2.8L inline-four (171 cu in) — DOHC, turbocharged, diesel

Body styles covered

• 3-door extended cargo van
• 3-door standard cargo van
• 3-door extended passenger van
• 3-door standard passenger van
• 2-door cutaway van
• 4-door standard cargo van

Trims covered

• Base
• LS
• LT

Known issues on the 2020 Express 3500. Nine of the sixteen complaints on record for this year name the power train, with two each on the electrical system and the structure. Transmission and driveline material is accordingly the part most worth knowing here: shift diagnosis and pressure testing, valve body and clutch work, fluid specifications and fill procedures, propeller shaft and universal joint service, and rear axle disassembly with the backlash, preload and torque figures needed to put it back together correctly.