| Make | GMC |
| Model | Sierra Classic 2500HD |
| Year | 2006 |
| VIN | 1GTHC23D56F221796 |
| Auction part | 1GTHC23D56F |
| Trim Level | SL Crew Cab 2WD |
| Manufactured in | UNITED STATES |
| Production Seq. Number | 125281 |
| Body Style | CREW CAB PICKUP 4-DR |
| Engine Type | 6.6L V8 OHV 32V TURBO DIESEL |
| Transmission-long | 4-Speed Automatic | 5-Speed Manual | 6-Speed Automatic | 6-Speed Manual |
| Transmission-short | 4A | 5M | 6A | 6M |
| Driveline | RWD |
1GTHC23D56F293307
1GTHC23D56F293310
1GTHC23D56F293324
1GTHC23D56F293338
1GTHC23D56F293341
1GTHC23D56F293355
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1GTHC23D56F295624
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1GTHC23D56F295817
1GTHC23D56F295820
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1GTHC23D56F295848
1GTHC23D56F295851
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1GTHC23D56F295879
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1GTHC23D56F295896
1GTHC23D56F295901
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1GTHC23D56F295929
1GTHC23D56F295932
1GTHC23D56F295946
1GTHC23D56F295963
1GTHC23D56F295977
1GTHC23D56F295980
1GTHC23D56F295994
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1GTHC23D56F296014
1GTHC23D56F296028
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1GTHC23D56F296059
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1GTHC23D56F296093
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1GTHC23D56F296112
1GTHC23D56F296126
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1GTHC23D56F296174
1GTHC23D56F296188
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1GTHC23D56F296269
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1GTHC23D56F296319
1GTHC23D56F296322
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1GTHC23D56F296384
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1GTHC23D56F260825
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1GTHC23D56F264101