Warning Triangle for GMC Sierra — Installation Notes
Warning Triangle on the GMC Sierra is one of the few items where the specification is not a matter of taste. This installation notes covers what has to be checked before the part is bought, what the installation actually involves, and what has to be documented for the vehicle to stay insurable and road legal in your market.
Failures here are rarely dramatic. They are a specification nobody had written down, or premature wear on the first batch — the kind of problem that shows up at the worst possible moment.
Specification
| Item | Warning Triangle |
|---|---|
| Vehicle application | GMC Sierra |
| Focus | Installation Notes |
| Base material | Forged Aluminium |
| MOQ | 500 pieces per specification |
| Sampling | 7 working days, 5 days per revision |
| Compliance | RoHS |
What to check before buying
- Fitment — confirm the model year and market version of the GMC Sierra before ordering.
- Compliance — RoHS documentation should be issued with the shipment, not after it.
- Material — Forged Aluminium is the base; substitution is a new approval, not a small change.
- Installation — check whether the vehicle wiring or trim has to come out first.
- Documentation — keep the test report with the vehicle record.
Installation notes
- Disconnect the battery before any wiring work.
- Route cables away from moving parts and heat sources.
- Test the function before the trim goes back on.
- Record the installation date and the part number in the vehicle file.
- Re-check after the first week of use.
Maintenance and inspection
- Visual check every service interval.
- Function test after any electrical work on the vehicle.
- Replace at the first sign of intermittent operation.
- Keep the approved sample part number on the maintenance record.
Related safety items
Programmes that specify warning triangle usually cover car alarm, parking sensor kit, seat belt kit, speed limiter at the same time.
Questions buyers ask
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.
What testing is included?
Standard lots ship with dimensional and hardness reports. RoHS documentation is issued with the shipment when your market requires it.
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.
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 500 pieces per line.
Share a sample or a drawing and we will quote against a written specification, not against a photograph.
