Chevrolet/GMC OBS HVAC Control Knob

Resin
$14.00Ships in 3–5 days
Fit Guarantee

Guaranteed to fit Chevrolet/GMC C/K (GMT400, 1988–1994). If dimensions are off, we reprint it. No questions.

TC-CHEV-OBS-HVAC
Material
ABS-Like Resin V3.0+
Finish
Matte black
Bore
D-shaft (HVAC control)
Tolerance
±0.15 mm
Print
Resin · 16K
OEM Part
GM HVAC control knob
Weight
9g

The GMT400 OBS HVAC knobs go brittle and the bore strips, so the fan and temperature won't turn.

Modeled to the GMT400 HVAC-control shaft with a clean indicator. 16K resin finish, matte black.

Compatibility
Confirmed fit
  • Chevrolet/GMC C/K (GMT400, 1988–1994)
Likely fits
  • GMT400 SUVs (Tahoe/Yukon/Suburban) with the same HVAC head
Does not fit
  • 1995+ refreshed dash controls
  • Square-body lever heater (use the C10 knob)
FAQ

Will this match the original color exactly?

Close but not identical — decades of oxidation mean originals vary. The finish reads the same at arm's length. We have not had a return for color mismatch.

What material is this printed in and why?

ABS-Like Resin V3.0+. Chosen for surface quality and dimensional accuracy at the tolerances restoration-grade buyers expect.

What if it doesn't fit my unit?

Email support@telocast.com with a photo of the shaft and we'll reprint it. The fit guarantee is unconditional — if the bore is off, we fix it at no charge.

Do you make other parts for this model?

We're actively working on more parts for this make. Subscribe at the bottom of this page to be notified when new parts are listed.

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