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 MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 229 (CRUISE CONTROL SYSTEM)TROUBLE SHOOTINGTESTING FOR PROPER TERMINAL CONTACTFLAT WIRE (DOCK AND LOCK) CONNECTORS
1999 GMC Forward Control 5.7 R, Automatic
Flat Wire (Dock And Lock) Connectors
1999 GMC Forward Control 5.7 R, AutomaticSECTION Flat Wire (Dock And Lock) Connectors
WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
There are no serviceable parts for flat wire (dock and lock) connectors on the harness side or the component side.
Follow the procedure below in order to test terminal contact.
- Remove the component in question.
- Visually inspect each side of the connector for signs of contamination. Avoid touching either side of the connector, as oil from your skin may be a source of contamination as well.
- Visually inspect the terminal bearing surfaces of the flat wire circuits for splits, cracks, or other imperfections that could cause poor terminal contact. Visually inspect the component side connector to ensure that all of the terminals are uniform and free of damage or deformation.
- Insert the appropriate adapter from the Flat Wire Probe Adapter Kit (J 42675) on the flat wire harness connector in order to test the circuit in question.
RENDER: 1.0x
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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.