Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 GMC Terrain SLFACTORY OEM SERVICE PROCEDURE
E14A Seat Heating Element - Driver Back
Connector Part Information
|
Terminal Part Information
| Terminal Type ID | Terminated Lead | Diagnostic Test Probe | Terminal Removal Tool |
|---|---|---|---|
| I | Not required | J-35616-17 (LT GN) | No Tool Required |
| Pin | Size | Color | Circuit | Function | Terminal Type ID | Option |
|---|---|---|---|---|---|---|
| 1 | 0.75 0.75 |
BN / VT BN |
2077 2432 |
Driver Seat Heating Element Control Driver Seat Back Heating Element Control |
I I |
(KA1/KU1/KU3)-EPH KA1+EPH-KU3-KU1 |
| 2 | 0.35 | BU | 2425 | Driver Seat Back Heating Temperature Sensor Signal | I | - |
| 3 | 0.35 0.35 |
BK / YE BK / VT |
2080 2426 |
Driver Heated Seat Thermistor Low Reference Driver Heated Back Thermistor Low Reference |
I I |
(KA1/KU1/KU3)-EPH KA1+EPH-KU3-KU1 |
| 4 | 0.75 | BN / BK | 2078 | Driver Seat Heating Element Low Reference | I | - |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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