1966 GMC Sierra Value
Updated June 2026 · Based on real sold prices and current market data
Median market value: $19,795 · Average: $21,607
What the range means
Driver-quality cars with paint, trim, or mechanical work needed. 25th percentile of comparable sales — what survivors with deferred maintenance bring.
Solid driver-condition examples with documented maintenance. The middle of the market — where most transactions happen.
Concours-quality, numbers-matching, documented provenance. 75th percentile — what well-sorted, restored examples actually trade for.
Recent comparable sales
| Vehicle | Sold For |
|---|---|
| 1966 GMC Sierra | $16,495 |
| 1967 GMC Sierra | $23,495 |
| 1964 GMC Sierra | $19,495 |
| 1968 GMC Sierra | $34,995 |
| 1970 GMC Sierra | $6,895 |
| 1969 GMC Sierra | $32,495 |
| 1961 GMC Sierra | $33,495 |
| 1969 GMC Sierra | $40,495 |