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.
Engine Control Module: Installation
2004 Oldsmobile Bravada AWDSECTION Installation
WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Install the ECM. Ensure that the mounting tabs are engaged. Secure the spring latch to the ECM. Connect the ECM electrical connectors. Tighten the ECM electrical connector bolts to specification. See TORQUE SPECIFICATIONS .
- Install the ECM cover. If equipped with the Allison transmission, install the engine harness clip to the ECM cover. Connect the negative battery cables. Tighten negative battery terminal bolts to specification.
- If a NEW ECM was installed, program the ECM. See ENGINE CONTROL MODULE under PROGRAMMING.
RENDER: 1.0x
NO RELATED
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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.