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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSGMC1989S15 JIMMY 4.3 Z, RWD, AUTOMATICREPAIR AND DIAGNOSISTRANSMISSIONAUTOMATIC TRANSDIAGNOSIS - TORQUE CONVERTER CLUTCH
1989 GMC S15 Jimmy 4.3 Z, RWD, Automatic
Diagnosis - Torque Converter Clutch
1989 GMC S15 Jimmy 4.3 Z, RWD, AutomaticSECTION Diagnosis - Torque Converter Clutch
- Applications
- Description
- Trouble Shooting
- Testing & Diagnosis
- Diagnostic Charts
- Chart C-8, Torque Converter Clutch - 2.5L & 2.8L
- Chart C-8, Torque Converter Clutch - 4.3L, 5.0L, 5.7L
- Code 24, Vehicle Speed Sensor
- Chart C-1A, Park/Neutral Switch
- Code 24, Vehicle Speed Sensor Circuit Fault Computer Command Control
- Code 25, Manifold Air Temperature Sensor Voltage Low - Computer Command Control (2.5L Engine Only)
- Map Output Check - Computer Command Control
- Park/Neutral Switch Diagnosis - Computer Command Control
- Torque Converter Clutch Electrical Diagnosis - Computer Command Control (2.5L & 2.8L Engines)
- Torque Converter Clutch Electrical Diagnosis - Computer Command Control (4.3L, 5.0L & 5.7L Under 8500 GVW)
- Downshift Control Electrical Diagnosis - (4L60 - CCC TBI)
- Code 23, Throttle Position Sensor MISADJUSTED - Diesel Electronic Control System
- Code 24, Vehicle Speed Sensor Circuit - Diesel Electronic
- Torque Converter Clutch Electrical Diagnosis - Diesel Electronic Control System
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.