# GM Teases New 8.3-Liter Duramax Diesel V8 For Its Heavy-Duty Trucks

> **Newsylist Open Intelligence Dossier** · First detected: 2026-09-21 21:29 UTC · Category: Business · Sources: 5 · Current Velocity: 2.8

## Key People, Organizations & Locations
Diesel, New, Its, Trucks, Liter, Teases, Duramax, Heavy-Duty

## Multi-Source Evidence Table
| Source Outlet | Headline | Published (UTC) | Verification URL |
|---|---|---|---|
| Pickup Truck +SUV Talk | GM President Mark Reuss on truck dominance, new V8s and what comes next | 2026-09-21 15:37 | [Source Link](https://news.google.com/rss/articles/CBMif0FVX3lxTE5aQXBoVlFlcTREeG5hVXpqaHNDaHJIWkFZVVQ4UWY4eV9MOFpaWnBnaEs0c09kMGpWN3JyYlVLZ293QXp2Q1pCZXZrYjFveDBza0RUckRQX21UbC1wLWJSLWk2STVNSXV3Ym9Fa2RKbXU2QWNLakw0Z2htNUFGSEk?oc=5) |
| Detroit Free Press | Why no dipstick is needed to check oil in GM's next-gen pickup engines | 2026-09-21 15:37 | [Source Link](https://news.google.com/rss/articles/CBMisAFBVV95cUxQblV5U3d4ck9qVDFlUWRETGg1aTh4ZEtMVlNKZ3J2TURRQUQxUm5GbFpZa2UxSU52YWxQdlNVaW02RGZ0V3duVXE2VndUVmFSZnZvNnozX280UUpUY2FqM1ZpelFKQWNZUGhXRFNuWFM1MUh4SklUdFFQS3VPSzJoaTRqTUlEY1ZnTUxXWnpySWtaVlplenFVclJfSk14RjJDaG53WXJqWkZJRVduMVpDUQ?oc=5) |
| General Motors | Meet the Mongoose: GM teases all-new HD diesel engine | 2026-09-21 15:37 | [Source Link](https://news.google.com/rss/articles/CBMinwFBVV95cUxQazVxMlhNVFlKWHlFbUNDYzhweUk2WEhZQXR6Tm9VcGtKTjZtdHo2TmhlTFUxUnBuMThKbDZ2R3A3M090anZNQkExb2JfeFJNUEt3Rm82eFZBd3V0Ukg4X0VCYXlYNkxLVnQ0UkhNS0hSclBLcmctTFpvUWF1M3d1eWd6cDZSMkRCUjFEb2JFNnZvU1BxTVhhaENCbEdBSmc?oc=5) |
| Yahoo Finance | General Motors Unveils New Engine Lineup for 2027 Pickup Trucks | 2026-09-21 15:37 | [Source Link](https://news.google.com/rss/articles/CBMiowFBVV95cUxPU3A0alpjNXcxLU9SNTRBUlhWLUVaaXJsdUllMkhkSXh5Mkt2MXdaSldXWm41WEJucDhZTWNkejZiUHBtb2xfM081YVpiQThlRjVMWjc4cUF3SXBLR2N1UGkxWEhndzBWMURiMTdOMzQ4VDlDS0U5VmJpdEhvaG0zTzFnbXN1Y1ctOUFnUm5ldlRMYkZ3TENyWXhuSXF3ZHliZWVF?oc=5) |
| Motor1.com | GM Teases New 8.3-Liter Duramax Diesel V8 For Its Heavy-Duty Trucks | 2026-09-21 15:37 | [Source Link](https://news.google.com/rss/articles/CBMilwFBVV95cUxOcWZlZ3JRbjhxMXZJTklYZzl1M2R0V1d1TV9tN19kdUREU0MyODdWSU5za2prYlFoTjB1VUxaN0FiOS1MVlRUQm9ZZzE0SkNEaC1fWWdaVTBhZXRRLVRkeDlyNlItWlkydTk3T0hvLW10dnZqb0FZaHFSa01fWUhDRGJzQ01FblpNbUR4NDlxV0JhM3lSdXpZ?oc=5) |

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*Canonical Source: https://www.newsylist.com/trend/2026-09-21/gm-teases-new-8-3-liter-duramax-diesel-v8-for-its-heavy-duty-trucks*
*Synthesized by Newsylist Open Intelligence Engine under E-E-A-T journalistic standards.*