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 MANUALSGMC1988SUBURBAN 3/4 TON 4WD V8-379 6.2L DSLPARTS AND LABORTRANSMISSION AND DRIVETRAINMANUAL TRANSMISSION/TRANSAXLEINPUT SHAFTPARTS INFORMATION
1988 GMC Suburban 3/4 Ton 4WD V8-379 6.2L DSL
Parts Information
1988 GMC Suburban 3/4 Ton 4WD V8-379 6.2L DSLSECTION Parts Information
| Part | Manufacturer | OEM Part # | Price | Notes |
| 4 Speed Hydromatic M20 | ||||
| Main Gear | ||||
| 1ST Design | GMO | 15588219 | 195.00 | Contact Dealer for most current part and price information. |
| 4 Speed Hydromatic MC0 | GMO | 23049683 | 227.00 | Contact Dealer for most current part and price information. |
| 5 Speed Hydromatic | GMO | 23049683 | 227.00 | Contact Dealer for most current part and price information. |
RENDER: 1.0x
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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.