Turn Signal Lamp for GMC Sierra: Brass
This turn signal lamp for the GMC Sierra is specified around brass, which decides how it behaves in service far more than the part name does. We build to a written specification — base material, dimensions, finish and packing — and hold that specification on file so every reorder reproduces the approved piece.
The usual reason a programme changes supplier is not unit price. It is premature wear on the first batch, or premature wear on the first batch. Both are specification problems, and both are preventable.
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Specification
| Product | Turn Signal Lamp |
|---|---|
| Vehicle application | GMC Sierra |
| Material / finish | Brass |
| Typical use | Airport Ground Fleets |
| MOQ | 3,000 pieces per specification |
| Sampling | 14 working days, 5 days per revision |
| Bulk lead time | 20-30 days after approval |
| Compliance | IATF 16949 |
| Packing | 20 pieces per inner box, 500 per carton |
Material options
- Semi-Metallic Compound — used when the finish has to hold a coating
- PVC Coated Fabric — chosen where wear resistance comes first
- Reinforced Nylon — specified where the part sits close to a heat source
- Natural Rubber — used when the finish has to hold a coating
- Chromed Steel — specified where the part sits close to a heat source

Processes available
- heat treatment
- cold forging
- surface grinding
- injection moulding
- electroplating
- assembly line testing
Fitment notes
Keep the old part until the new one is on the bench. Comparing them side by side settles questions a photograph never will.
Where it is used
The specification above is the one most often ordered for airport ground fleets. Related applications include heavy load hauling, passenger transport, weekend riding, ride-hailing fleets, rental fleets.
Quality and packing
- In-line inspection with AQL 2.5 sampling on every lot.
- Dimensional report issued against the approved drawing.
- Carton marking and barcode to your specification.
- Golden sample retained at the factory as the reorder reference.
Questions buyers ask
How long does sampling take?
Samples leave the factory in 14 working days, and each revision round adds about 5 days once you have seen the first piece.
What happens if a lot fails inspection?
The lot is re-inspected against the golden sample, and replacement pieces ship on the next available booking at our cost.
Can you match an existing sample?
Send a sample and we will reverse-engineer the specification, then produce a counter sample for approval before any bulk starts.
What is the minimum order quantity?
The standard MOQ is 3000 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.
Tell us the model, the fitment and the quantity and we will hold a production slot for you.







