01 Blazer tranny problem

[Blue Bowtie]

You might want to browse my crude web pages on the repair procedure:

4L60ERepairs

I've found a petty good tool for aligning the pump case halves when assembling the pump:



Get a 24" piece of flat stock about 1" wide (or wider) and fold some tangs (as shown in the foreground) in your bench vise or brake. A single clamp of any kind will easily align the halves while you bolt them.

I would also strongly urge you get a factory or ATSG manual specific to your transmission, and arrange a place to get repair parts before you begin. Many regular auto parts store do not stock transmission parts. If the vehicle has near 100K miles, consider a new separator plate and new or remanufactured torque converter.

[blazes9395]

Originally Posted by dksob81

What is the black box on the driverside of the transmission (the shift lever goes through it) called? I had a problem getting the electrical connectors off and apparently the person who to the used tranny out of the other vehicle did too because they broke it. Well it looks like they glue the connectors into place....lol Anyways I need to know what it is called so I can find another one. Also anyone know the trick to getting the electrical connector off without breaking them?

There was a TSB about the neutral safety switches on these, and many other vehicles. There was an issue where these switches would heat up as a result of a hot transmission and the heat would melt the glue from the switch and it would melt out to the connector, glueing the pieces together. When someone would come along to unplug the switch, they would try to prug the plug out and damage the switch, casuing shifting problems etc. If you damaged it, just replace it, they are about $50 or so.

[dksob81]

lynndiwagon - well I work at a repair shop and we have a bunch of hose clamps

[lynndiwagon]

Blue Bowtie, those were good instructional pages and I used them, along with the manual and DVD, to successfully rebuild my 4L60E. All will benefit.....Thanks

[wafrederick]

The neutral safety switch is not cheap,about $180.00 for it and it is an AC Delco