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 MANUALSCHEVROLET1990BLAZER FULL SIZE V8-350 5.7LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSVEHICLE SPEED SENSOR SIGNAL BUFFERLOCATIONSDIGITAL RATIO ADAPTER CONTROLLER (DRAC)
1990 Chevrolet Blazer Full Size V8-350 5.7L
Digital Ratio Adapter Controller (DRAC)
1990 Chevrolet Blazer Full Size V8-350 5.7LSECTION Digital Ratio Adapter Controller (DRAC)
DIGITAL RATIO ADAPTER CONTROLLER (DRAC) MODULE
Digital Ratio Adapter Controller Module:
The Digital Ratio Adapter Controller (DRAC) Module is located behind center of Instrument Panel (I/P), right of Steering Column.
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.