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 MANUALSGMC1989S15/T15 2WD JIMMY V6-173 2.8LREPAIR AND DIAGNOSISBRAKES AND TRACTION CONTROLPARKING BRAKE SYSTEMADJUSTMENTS
1989 GMC S15/T15 2WD Jimmy V6-173 2.8L
Parking Brake System: Adjustments
1989 GMC S15/T15 2WD Jimmy V6-173 2.8LSECTION Adjustments
1. Block front wheels, ensure brake pedal is fully released, then raise and support rear of vehicle.
2. Loosen adjusting nut at rear cable equalizer until rear wheels spin freely and ensure cables do not bind or stick over operating range. On Pickup models with intermediate cable bracket, remove bracket before performing any parking brake adjustments.
3. Depress parking brake pedal 2 clicks on 2 wheel drive models or 3 clicks on 4 wheel drive models.
4. Tighten equalizer adjusting nut until rear wheels will not rotate forward without applying excessive force.
5. Loosen adjusting nut until moderate drag is felt when rotating wheels forward, ensuring drag at each wheel is approximately equal.
6. Reinstall cable guide, if removed, release parking brake pedal, and ensure little or no brake drag is felt when rotating rear wheels.
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.