Do you need return pump on GMC 4L60E?

Do you need return pump on GMC 4L60E?

So now that your 4L60E is working, lets carry onto Fuel. I sent up my fuel system a little different then Mykk, Here is what i used. It is VERY Important that if you are keeping the stock pump, you HAVE to have a return, i dont care what anyone else says, just capping off the return is gonna kill the pump, THE RETURN IS THERE TO COOL THE PUMP!.

What’s the difference between the 700R4 and 4L60-E?

The key distinction of the 700R4 / 4L60 / Early 4L60-E (from the Later 4L60-E) is the four bolt rear output or tailhousing / adapter pattern. The Later 4L60-E has a six bolt “hex” rear bolt pattern and a removable bellhousing. There are three main castings of the 700R case.

How to disconnect Efi from GMC 4L60E?

1.Find the plug that used to plug into the Distributor and lead to the PCM. 3. Take Wire and run it into the TACH position on your HEI Distributor. 4. Done! Picture of wire with a quick disconnect.

What kind of transmission does a GM TH350 have?

2wd transmissions feature conical shaped tailhousings and an output yoke, which are replaced with a typically shorter 4wd style output shaft (most often included with our adapter assemblies) of varying lengths and spline counts, depending on the application.

What causes a vacuum leak in a fuel injection system?

Vacuum leaks are the leading cause of installation issues with your fuel injection system. Check all sources of potential vacuum leaks including components not related to the fuel injection system. There are instances where the vacuum leak is coming from the adapter plate used to attach the throttle body to the manifold.

How to repair a 1988 GM vacuum truck?

Access our GM Full-Size Trucks 1988-1998 Vacuum Diagrams Repair Guide by creating an account or signing into your AutoZone Rewards account. Once you sign in, follow these instructions to access our Repair Guides. Add your vehicle in Manage My Vehicles. Enter your vehicle details. Click the “View More” button, and then click “Vehicle Repair Guides.”