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.
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HOMESERVICE MANUALSGMC2019SIERRA 1500 LIMITED BASE, 4WD, GASREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESPROGRAMMING AND SETUPREPAIR INSTRUCTIONSK34 GLOW PLUG CONTROL MODULE: PROGRAMMING AND SETUPPROGRAMMING AN EXISTING OR NEW CONTROL MODULE
2019 GMC Sierra 1500 Limited Base, 4WD, Gas
Programming an Existing or New Control Module
2019 GMC Sierra 1500 Limited Base, 4WD, GasSECTION Programming an Existing or New Control Module
To program an existing or new control module, perform the following procedure:
- Install the special tool: EL-49642 SPS Programming Support Tool
- Ignition - On / Vehicle - In Service Mode
- Access SPS and follow the on-screen instructions for the control module:K34 Glow Plug Control Module
NOTE:
High underhood temperatures may prevent programming of the control module. Allow sufficient time for the engine to cool before proceeding.
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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.