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 MANUALSCHEVROLET1988BLAZER FULL SIZE V8-350 5.7LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSVEHICLE SPEED SENSORSERVICE AND REPAIRAUTOMATIC TRANSMISSION
1988 Chevrolet Blazer Full Size V8-350 5.7L
Automatic Transmission
1988 Chevrolet Blazer Full Size V8-350 5.7LSECTION Automatic Transmission
Remove or Disconnect
^ Apply the parking brake.
^ Raise the vehicle and support it with suitable safety stands.
1. Harness connector (275).
2. Screw (279).
^ Rotate the cover (278) to the side.
3. Speed sensor (277).
4. Seal (276).
Inspect
^ All parts for wear and damage.
Install or Connect
1. New seal (276), onto the speed sensor (277). Coat the seal with a thin film of transmission oil.
2. Speed sensor (277).
^ Rotate the cover (278) into place.
3. Screw (279).
Tighten
^ Screw (279) to 11 N.m (8 ft. lbs.).
4. Harness connector (275). Lower the vehicle. Release the parking brake.
5. Transmission fluid if needed.
RENDER: 1.0x
NO RELATED
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Use the Manual With the Right Hardware
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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.