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 MANUALSCHEVROLET1990STEP VAN 6.2 J, AUTOMATIC, 3L80-HD/M40REPAIR AND DIAGNOSIS (SINGLE PAGE)TRANSMISSIONAUTOMATIC TRANSOVERHAUL - 3L80 & 3L80HDAPPLICATION
1990 Chevrolet Step Van 6.2 J, Automatic, 3L80-HD/M40
Overhaul - 3L80 & 3L80HD: Application
1990 Chevrolet Step Van 6.2 J, Automatic, 3L80-HD/M40SECTION Application
TRANSMISSION APPLICATION
| Application | Transmission Model (RPO) | |
|---|---|---|
| Chevrolet | ||
| Cab & Chassis "C", "K" "R" & "V" Series (5.7L, 6.2L & 7.4L) | 3L80/3L80HD (M40) | |
| Chevy Van "G" Series (4.3L, 5.0L, 5.7L, 6.2L & 7.4) | 3L80/3L80HD (M40) | |
| Cutaway "G" Series (5.7L, 6.2L & 7.4L) | 3L80/3L80HD (M40) | |
| Cutaway "P" Series (3.9L, 4.8L, 5.7L, 6.2L & 7.4L) | 3L80/3L80HD (M40) | |
| Forward Control "P" Series (3.9L, 4.8L, 5.7L, 6.2L & 7.4L) | 3L80/3L80HD (M40) | |
| Hi-Cube "P" Series (5.7L, 6.2L & 7.4L) | 3L80/3L80HD (M40) | |
| Pickup "C", "K", "R" & "V" Series (4.3L, 5.0L. 5.7L, 6.2L & 7.4) | 3L80/3L80HD (M40) | |
| RV Cutaway "G" Series (5.7L, 6.2L & 7.4L) | 3L80/3L80HD (M40) | |
| Sportvan "G" Series (5.7L, 6.2L & 7.4L) | 3L80/3L80HD (M40) | |
| Step Van "P" Series (3.9L, 4.8L, 5.7L, 6.2L & 7.4L) | 3L80/3L80HD (M40) | |
| Suburban "R" & "V" Series (5.7L, 6.2L & 7.4L) | 3L80/3L80HD (M40) | |
| GMC | ||
| Cab & Chassis "C", "K" "R" & "V" Series (5.7L, 6.2L & 7.4L) | 3L80/3L80HD (M40) | |
| Forward Control "P" Series (3.9L, 4.8L, 5.7L, 6.2L & 7.4L) | 3L80/3L80HD (M40) | |
| Magnavan "G" Series (5.7L, 6.2L & 7.4L) | 3L80/3L80HD (M40) | |
| Pickup "C", "K", "R" & "V" Series (4.3L, 5.0L, 5.7L, 6.2L & 7.4) | 3L80/3L80HD (M40) | |
| Rally Camper Special "G" Series (5.7L, 6.2L & 7.4) | 3L80/3L80HD (M40) | |
| Rally "G" Series (5.7L, 6.2L & 7.4) | 3L80/3L80HD (M40) | |
| Suburban "R" & "V" Series (5.7L, 6.2L & 7.4L) | 3L80/3L80HD (M40) | |
| Value Van "P" Series (3.9L, 4.3L, 4.8L, 5.7L, 6.2L & 7.4L) | 3L80/3L80HD (M40) | |
| Vandura "G" Series (4.3L, 5.0L, 5.7L, 6.2L & 7.4L) | 3L80/3L80HD (M40) | |
| Vandura "P" Series (4.8L, 5.7L, 6.2L & 7.4L) | 3L80/3L80HD (M40) | |
| Vandura Special "G" Series (5.7L, 6.2L & 7.4L) | 3L80/3L80HD (M40) | |
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.