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| Submodel | Resale Range | Trade-in Range |
| 2003 Silverado 2500 4WD 4-Dr Ext Cab Short V8 | $9,180 - $20,410 | $6,250 - $17,120 |
| 2003 Silverado 2500 HD RWD 2-Dr Reg Cab Long V8 | $6,510 - $12,800 | $4,290 - $10,510 |
| 2003 Silverado 3500 RWD 4-Dr Crew Cab Long V8 | $9,600 - $21,640 | $6,420 - $17,800 |
| 2003 Silverado 1500 HD 4WD 4-Dr Crew Cab Short V8 | $11,080 - $23,030 | $7,370 - $19,180 |
| 2003 Silverado 2500 HD RWD 4-Dr Crew Cab Short V8 | $8,860 - $19,910 | $5,880 - $16,310 |
| 2003 Silverado 2500 HD RWD 4-Dr Ext Cab Long V8 | $8,010 - $18,140 | $5,350 - $14,980 |
| 2003 Silverado 2500 HD 4WD 4-Dr Ext Cab Short V8 | $9,420 - $21,200 | $6,420 - $17,710 |
| 2003 Silverado 1500 4WD 2-Dr Reg Cab Long V8 | $7,120 - $14,170 | $4,680 - $11,670 |
| 2003 Silverado 1500 4WD 2-Dr Reg Cab Long V6 | $7,120 - $14,170 | $4,680 - $11,670 |
| 2003 Silverado 1500 RWD 2-Dr Reg Cab Short V8 | $5,830 - $11,460 | $3,720 - $9,280 |
| 2003 Silverado 1500 RWD 2-Dr Reg Cab Long V6 | $5,830 - $11,460 | $3,720 - $9,280 |
| 2003 Silverado 3500 4WD 2-Dr Reg Cab Long V8 | $9,030 - $18,430 | $5,970 - $15,240 |
| 2003 Silverado 1500 4WD 4-Dr Ext Cab Long V8 | $8,720 - $20,010 | $5,840 - $16,660 |
| 2003 Silverado 1500 RWD 2-Dr Reg Cab Long V8 | $5,830 - $11,460 | $3,720 - $9,280 |
| 2003 Silverado 2500 HD 4WD 4-Dr Crew Cab Long V8 | $10,330 - $22,940 | $7,010 - $19,020 |
| 2003 Silverado 1500 4WD 2-Dr Reg Cab Short V8 | $7,120 - $14,170 | $4,680 - $11,670 |
| 2003 Silverado 1500 4WD 2-Dr Reg Cab Short V6 | $7,120 - $14,170 | $4,680 - $11,670 |
| 2003 Silverado 1500 RWD 4-Dr Ext Cab Short V8 | $7,010 - $17,130 | $4,530 - $14,090 |
| 2003 Silverado 1500 RWD 4-Dr Ext Cab Short V6 | $7,010 - $17,130 | $4,530 - $14,090 |
| 2003 Silverado 2500 HD RWD 4-Dr Ext Cab Short V8 | $8,010 - $20,410 | $5,350 - $17,120 |
| 2003 Silverado 1500 RWD 2-Dr Reg Cab Short V6 | $5,830 - $11,460 | $3,720 - $9,280 |
| 2003 Silverado 3500 2WD 4-Dr Crew Cab Long V8 | $9,600 - $21,640 | $6,420 - $17,800 |
| 2003 Silverado 2500 RWD 2-Dr Reg Cab Long V8 | $6,110 - $12,320 | $4,000 - $10,040 |
| 2003 Silverado 2500 HD 4WD 4-Dr Crew Cab Short V8 | $10,330 - $22,940 | $7,010 - $19,020 |
| 2003 Silverado 1500 RWD 4-Dr Ext Cab Long V8 | $7,010 - $17,130 | $4,530 - $14,090 |
| 2003 Silverado 1500 4WD 4-Dr Ext Cab Short V8 | $8,720 - $20,010 | $5,840 - $16,660 |
| 2003 Silverado 3500 4WD 4-Dr Ext Cab Long V8 | $10,860 - $23,390 | $7,180 - $19,380 |
| 2003 Silverado 1500 HD RWD 4-Dr Crew Cab Short V8 | $9,880 - $20,560 | $6,420 - $16,920 |
| 2003 Silverado 2500 HD 4WD 2-Dr Reg Cab Long V8 | $7,970 - $15,740 | $5,350 - $13,100 |
| 2003 Silverado 3500 RWD 4-Dr Ext Cab Long V8 | $9,380 - $20,350 | $6,050 - $16,660 |
| 2003 Silverado 2500 HD 4WD 4-Dr Ext Cab Long V8 | $9,420 - $21,200 | $6,420 - $17,710 |
| 2003 Silverado 2500 HD RWD 4-Dr Crew Cab Long V8 | $8,860 - $19,910 | $5,880 - $16,310 |
| 2003 Silverado SS AWD 2-Dr Ext Cab Short V8 | $12,060 - $23,290 | $8,050 - $19,290 |
| 2003 Silverado 3500 4WD 4-Dr Crew Cab Long V8 | $11,040 - $24,660 | $7,550 - $20,510 |
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