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.
1981 Chevrolet Step Van P30, 5.7L Eng VIN M, Standard TransFACTORY OEM SERVICE PROCEDURE
Fluid Level Sensor Switches
| Condition | Code | Procedure |
|---|---|---|
| Attaching hardware broken | A | Require repair or replacement of hardware |
| Attaching hardware missing | C | Require replacement of hardware |
| Attaching hardware not functioning | A | Require repair or replacement of hardware |
| Binding, affecting performance | A | Require repair or replacement |
| Binding, not affecting performance | 2 | Suggest repair or replacement |
| Broken | A | Require repair or replacement |
| Burned, affecting performance | A | Require repair or replacement |
|
NOTE:
Determine cause and correct prior to repair or replacement of part.
|
||
| Burned, not affecting performance | 2 | Suggest repair or replacement |
|
NOTE:
Determine cause and correct prior to repair or replacement of part.
|
||
| Cracked, affecting performance | A | Require repair or replacement |
| Cracked, not affecting performance | 1 | Suggest repair or replacement |
| Float saturated | A | Require replacement |
| Leaking | A | Require repair or replacement |
| Malfunctioning | A | Require repair or replacement |
|
NOTE:
Includes inoperative, intermittent operation, or failure to perform all functions.
|
||
| Melted, affecting performance | A | Require repair or replacement |
|
NOTE:
Determine cause and correct prior to repair or replacement of part.
|
||
| Melted, not affecting performance | 2 | Suggest repair or replacement |
| Missing | C | Require replacement |
| Out of adjustment | B | Require repair or replacement |
| Terminal broken | A | Require repair or replacement |
| Terminal burned, affecting performance | A | Require repair or replacement |
|
NOTE:
Determine cause and correct prior to repair or replacement of part.
|
||
| Terminal burned, not affecting performance | 2 | Suggest repair or replacement |
| Terminal corroded, affecting performance | A | Require repair or replacement |
| Terminal corroded, not affecting performance | 2 | Suggest repair or replacement |
| Terminal loose, affecting performance | B | Require repair or replacement |
| Terminal loose, not affecting performance | 1 | Suggest repair or replacement |
| Won't return | A | Require repair or replacement |
| Worn | 1 | Suggest replacement |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no 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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.