1988 Chevrolet K1500 Silverado 4x4 short bed, original NC truck bid at $3,000 with 11 days left
First-year OBS 4x4 in the desirable short-bed regular cab, bid at a fraction of recent sales with 11 days left
1988 Chevrolet K1500 Silverado
Why we picked it
Why we picked it: the 1988 K1500 was the first year of GM's GMT400 "OBS" trucks, and the regular-cab short-bed 4x4 is the configuration buyers want. This one has the 350 TBI V8, a four-speed automatic and a part-time two-speed transfer case. The seller says it is garage kept, unmodified, has an accident-free CARFAX, starts easily, runs well and the 4WD works, and it comes with a clean North Carolina title.
At $3,000 the current bid is far below the $11,300 to $27,000 that similar original short-bed K1500s brought in the last few months. The auction does not end until November 2, so expect the price to climb, but it is a good one to watch if you want a straight, honest OBS 4x4 to build on.
The value check
The current bid is $4,000. Comparable cars in the same condition have sold for $11,300–$27,000, so the middle of the market is about $19,150. That put this car 79% under. Bids usually climb in the final hours, so the discount will likely shrink.
Unmodified 1988-97 K1500 regular-cab short beds with 84k-268k miles sold for $11,300 to $27,000 from July to October 2026 (BaT, GAA, Barrett-Jackson). The $3,000 bid is about 84% under the $19,150 midpoint, but this auction runs to Nov 2 and bids usually climb.
- BaT 1990 K1500 Silverado short bed, 100k mi, $27,000 (Sep 2026)
- GAA 1990 K1500 Silverado short bed, 117k mi, $13,500 (Jul 2026)
- BaT 1997 K1500 Silverado short bed, 118k mi, $11,300 (Aug 2026)
- BaT 1992 K1500 Silverado Z71 short bed, 84k mi, $24,000 (Oct 2026)
What to check
- The seller lists undercarriage oxidation; check frame rails, rocker panels, cab corners and the bed floor for rot
- 146,700 indicated miles: ask for service records on the 350 TBI and the 700R4/4L60 automatic, which is the weak link in these trucks
- Check the front axle actuator (vacuum/electric shift on early GMT400s) and transfer case for leaks and proper engagement
- First-year 1988 trucks have some one-year parts; confirm dash, brake booster and trim pieces are present before you bid
- Reserve status is not stated on the page
Making it drive like new
A 1988 K1500 is a natural starting point for a light restomod: a 5.3 or 6.0 LS swap with a 4L80E or 4L60E, a modern disc-brake and master cylinder upgrade, Bilstein 5100 shocks, and an updated wiring harness keep the OBS look while making it a reliable daily 4x4.
3 builders make a complete chassis for the 1988–98 OBS C1500 pickup. Compare them side by side, along with what it takes to stiffen the factory frame.
What 1988–98 OBS C1500 pickup cars sell for
| Condition | Sales | Low | Typical | High |
|---|---|---|---|---|
| Driver | 26 | $4,950 | $19,750 | $52,200 |
| Collector | 2 | $60,500 | $76,000 | $91,500 |
Recent sales
| Car | Condition | Result | Date | Where |
|---|---|---|---|---|
| 1990 454SS | Driver | $36,300 | Oct 23, 2026 | Mecum |
| 1990 454SS | Driver | $45,100 | Oct 23, 2026 | Mecum |
| 1990 C1500 454SS | Driver | $38,500 | Oct 23, 2026 | Mecum |
| 1990 454SS | Driver | $40,700 | Oct 21, 2026 | Mecum |
| 1990 C1500 454SS | Driver | $21,750 | Oct 9, 2026 | Bring a Trailer |
| 1992 Chevrolet K1500 Silverado Short Bed Z71 | Driver | $24,000 | Oct 4, 2026 | Bring a Trailer |
| 1998 Chevrolet K1500 Extended Cab Silverado Z71 | Driver | $18,000 | Oct 1, 2026 | Hemmings |
| 1992 454SS | Driver | $39,000 | Sep 29, 2026 | Hagerty Marketplace |

