C1500: owner reports and bulletins
Got C1500 on your scanner? Tell the mechanic your year, make, model and any symptoms and you'll get the likely cause and what to check first. Ask about this code.
What owners report to NHTSA
124 complaints filed with NHTSA mention C1500, 14 of them since 2015, across 36 different models. The component owners most often filed it under: visibility:windshield wiper/washer.
Most-reported models
| Vehicle | Complaints | Model years reported |
|---|---|---|
| CHEVROLET SILVERADO 1500 | 40 | 1997, 1998, 1999, 2002, 2003 |
| CHEVROLET C1500 | 18 | 1992, 1993, 1994, 1995, 1996 |
| GMC SIERRA 1500 | 8 | 1997, 1999, 2001, 2002, 2006 |
| CHEVROLET SILVERADO | 7 | 1994, 1999, 2000, 2005, 2007 |
| CHEVROLET C/K PICKUPS | 5 | 1997, 1998, 1999 |
| GMC SIERRA | 4 | 1994, 1996, 1997, 2006 |
| FIRESTONE FIRESTONE | 4 | 9999 |
| GMC SUBURBAN | 4 | 1997, 1999 |
| CHEVROLET SUBURBAN 1500 | 3 | 1998, 1999 |
Sources: NHTSA Office of Defects Investigation complaint database and manufacturer communications file, snapshots September 2026. A complaint or bulletin that mentions a code is a report about that vehicle, not a statement that the code has one cause.