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 MANUALSGMC1977FORWARD CONTROL 7.4L ENG VIN Y, AUTOMATIC TRANS, TRANS MFR CD 475/M40REPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEIGNITION SYSTEMDISTRIBUTOR APPLICATIONSDELCO-REMY DISTRIBUTORS
1977 GMC Forward Control 7.4L Eng VIN Y, Automatic Trans, Trans Mfr CD 475/M40
DELCO-REMY Distributors
1977 GMC Forward Control 7.4L Eng VIN Y, Automatic Trans, Trans Mfr CD 475/M40SECTION DELCO-REMY Distributors
CHEVROLET & GMC
| Application(1) | Part No. | |||
|---|---|---|---|---|
| 250" 6 Cyl. | ||||
| Calif. Man. Trans. L.D. | 1110692 | |||
| Calif. Auto. Trans. L.D. | 1110682 | |||
| Fed. & High Alt. Man. Trans. L.D. | 1110678 | |||
| Fed. & High Alt. Auto. Trans. L.D. | 1110674 | |||
| Federal H.D. | 1110679 | |||
| 292" 6 Cyl. | ||||
| Calif. H.D. | 1110680 | |||
| Federal H.D. | 1110679 | |||
| 305" V8 | ||||
| Federal L.D. | 1103252 | |||
| Federal H.D. | 1103237 | |||
| 350" V8 | ||||
| Federal L.D. | 1103253 | |||
| Federal H.D. | 1103274 | |||
| High Alt. L.D. | 1103246 | |||
| Calif. L.D. | 1103254 | |||
| Calif. H.D. | 1103250 | |||
| 400" V8 | ||||
| Federal H.D. | 1103249 | |||
| Calif. H.D. | 1103250 | |||
| 403" V8 | ||||
| Calif. | 1103299 | |||
| Federal | 1103267 | |||
| 454" V8 | ||||
| Federal L.D. & H.D. | 1103238 | |||
| Calif. H.D. | 1103240 | |||
| 455" V8 | ||||
| Calif. | ||||
| Federal | ||||
|
||||
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.