Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2018 5500HD/5500XD Medium Duty.
The 2018 Chevrolet 5500HD/5500XD is a medium‑duty truck built on a robust chassis with a dedicated powertrain, positioned within Chevrolet's commercial lineup for the 2018 model year. Its placement in the 2017‑2023 production span falls into a period where the highest and lowest complaint counts recorded are both six, indicating a stable, low‑volume complaint profile for that generation. This consistency suggests that the 2018 version inherits the same modest complaint trajectory observed across the broader model years.
Capacities, torques and tune-up values from the factory service manual.
The firing order is 1-8-7-2-6-5-4-3.
| Cylinder Firing Order | 1-3-4-2 |
| Cylinder Firing Order | 1-3-4-2 |
| Cylinder Firing Order | 1-8-7-2-6-5-4-3 |
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
Showing 1 of 1 campaigns on record for this vehicle.
Isuzu Technical Center of America, Inc. (Isuzu) is recalling certain 2015-2017 Isuzu NPR, Reach, 2016-2020 Isuzu NPR XD, NPR HD, NQR, 2016-2021 Isuzu NRR, 2017-2020 Chevrolet 4500XD, 4500HD, 5500HD, and 2020 Chevrolet… Remedy: Isuzu will notify owners, and dealers will inspect and, if needed, replace and tighten the rear axle U-bolt nuts, free of charge. The recall began on April 23, 2021. Owners may…
Showing 5 of 363 bulletins on record with NHTSA.
| Bulletin | Date | Component | Summary |
|---|---|---|---|
| PIT3271Q | 2026-04-01 | Unknown Or Other | This preliminary information communicates information about how to determine if a wheel… |
| PIP6104 | 2026-03-09 | Unknown Or Other | This Preliminary information communicates the steps on how to save a GDS2 Session Log and… |
| PIP4902V | 2026-03-09 | Unknown Or Other | This preliminary information advises a dealer on how to email GDS2 session logs into… |
| PIP4902U | 2026-01-08 | Unknown Or Other | This preliminary information advises a dealer on how to email GDS2 session logs into… |
| PIT5214G | 2025-11-20 | Unknown Or Other | This Preliminary Information communication provides information to the technician about… |
The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.
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Cross-vehicle references for the kinds of data on this page.
NHTSA lists 1 recall campaign(s) for this model year. Check your specific vehicle by VIN.