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 REPAIRMANUAL TRANSMISSION
1988 Chevrolet Blazer Full Size V8-350 5.7L
Manual Transmission
1988 Chevrolet Blazer Full Size V8-350 5.7LSECTION Manual Transmission
Remove or Disconnect
^ Raise the vehicle and support it with suitable safety
1. Harness connector (101).
2. Screw (129), if used.
3. Speed sensor (127).
4. Seal (126).
Install or Connect
1. New seal (126) onto the speed sensor (127).
^ Coat the seal with a thin film of transmission oil.
2. Speed sensor (127).
3. Screw (129), if used.
Tighten
^ Screw (129) to 12 N.m (9 ft. lbs.).
^ Speed sensor (127) to 43 N.m (32 ft. lbs.).
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.