1984–1988 GMC S15 Cab Chassis
Common problems, technical service bulletins, fluid specs and labor times — verified for your car.
Top Problems (5)
Transmission Issues
high
Rusting Frame
high
Faulty Fuel Pump
medium
Leaking Power Steering
medium
Active Service Bulletins
— Intermittent Operation Check
Engine Performance
— EXPERTEC TSB (436505)
Quick Lookups
— Doors Will Lock But Will Not Unlock
Body & Frame
— EXPERTEC TSB (88-T-29)
Quick Lookups
— Cleaning & Inspection
Brakes
Key Fluid Specs
| Spec | Value |
|---|---|
| Blazer & Pickups | 48 |
| S/t Blazer, S/t Jimmy & S/t Pickup Models | 40 |
| Front System Only | 48 |
| Front & Rear System | 84 |
| Front & Rear System | 72 |
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