Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2008 W-Series Commercial.
The 2008 GMC Truck W-Series Commercial belongs to a generation spanning 2001 to 2010, a period that produced just one recorded complaint across the entire model line. With that single 2002 complaint serving as both the highest and lowest annual tally, the 2008 model year sits within a remarkably quiet reliability history. For researchers, this scarcity of reported issues means there is little documentation of widespread defects or chronic problems, leaving the 2008 variant with an uneventful but notably clean record.
Capacities, torques and tune-up values from the factory service manual.
Torque the oil drain plug to 18.0 ft-lbs.
| Engine Oil Pan Drain Plug | 18.0 ft-lbs |
| Key ON Engine OFF (KOEO) | 50-60 |
| RPM | 43-45 @ Idle rpm |
| Injector Primary Resistance | 11-14 @ 50-90 degreesF ohms |
| Engine Compression | 100 Minimum psi |
| 1 | Installation, 92 ft. lbs., step 2: then remove bolt, install new bolt., step 3: 92 ft. lbs., step 4: 130 degrees. | 92 ft. lbs |
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 Manufacturing Services of America, Inc. (Isuzu) is recalling certain model year 2001-2013 Isuzu N-Series; model year 2001-2010 Chevrolet and GMC W-Series; model year 2001-2004 Isuzu FRR and model year 2001-2004… Remedy: Isuzu will notify owners and dealers will inspect the trucks. The extension cord and damaged components will be replaced, free of charge. The recall began on August 30, 2013…
Showing 5 of 586 bulletins on record with NHTSA.
| Bulletin | Date | Component | Summary |
|---|---|---|---|
| 13598 | 2025-09-09 | Unknown Or Other | New Vehicle Monitoring Programs Section in IVH |
| PIC5650M | 2025-08-06 | Unknown Or Other | This Preliminary Information communication provides information to the technician about… |
| PIP5601C | 2025-07-18 | Unknown Or Other | This PI communicates the requirement to provide a pico file to receive diagnostic… |
| PIT5074R | 2025-05-30 | Unknown Or Other | This Preliminary Information communication provides information to the technician about… |
| PIT5074R | 2025-05-30 | 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.
Decode factory build data for a specific vehicle by VIN.
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.