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 MANUALSGMC1986SUBURBAN C2500, 5.7 M, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEADJUSTMENTTUNE-UP - V6ADJUSTMENTSCAPACITIES
1986 GMC Suburban C2500, 5.7 M, Standard
Tune-Up - V6: Adjustments: Capacities
1986 GMC Suburban C2500, 5.7 M, StandardSECTION Capacities
FLUID CAPACITIES
| Application | Quantity | ||||||
|---|---|---|---|---|---|---|---|
| Auto. Trans. (Dexron II) | |||||||
| 3-Speed | |||||||
| Overhaul | 19.0 pts. (8.9L) | ||||||
| Refill | 7.0 pts. (3.3L) | ||||||
| 4-Speed | |||||||
| Overhaul | 23.0 pts. (10.9L) | ||||||
| Refill | 10.0 pts. (4.7L) | ||||||
| Cooling System (1) | |||||||
| 2.8L | 12.4 qts. (11.7L) | ||||||
| 4.3L | 13.6 qts. (12.9L) | ||||||
| Crankcase (Including Filter) | |||||||
| 2.8L | 4.0 qts. (3.8L) | ||||||
| 4.3L | 5.0 qts. (4.8L) | ||||||
| Front Axle | |||||||
| Pickup | 2.0 qts. (1.9L) | ||||||
| S10/S15, Blazer/Jimmy | 1.3 qts. (1.2L) | ||||||
| Fuel Tank | |||||||
| Standard | |||||||
| Astro Van/Safari | 17.0 gals. (64L) | ||||||
| Blazer/Jimmy, Suburban | 25.0 gals. (95L) | ||||||
| S10/15 | 13.2 gals. (50L) | ||||||
| All Others | 22.0 gals. (83L) | ||||||
| Optional | |||||||
| Astro Van/Safari | 27.0 gals. (102L) | ||||||
| Van | 33.0 gals. (125L) | ||||||
| All Others | 20.0 gals. (76L) | ||||||
| Man. Trans. (Dexron II) | (2) | ||||||
| Rear Axle | 4.5 pts. (2.1L) | ||||||
| Transfer Case (Dexron II) | |||||||
| 205 & 208 | 5.2 pts. (2.5L) | ||||||
| 207 | 4.6 pts. (2.2L) | ||||||
|
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SYSTEM REFRIGERANT CAPACITIES
| Application | Ounces | |
|---|---|---|
| Astro/Safari | ||
| Conventional C-60 | 32 | |
| Overhead C-69 | 48 | |
| Pickup/Van | ||
| Conventional C-60 | 48 | |
| Overhead C-69 | 84 | |
| S10/S15 | 40 | |
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.