Learn how the 4L60E 1-2 Shift Valve works (and the 1-2 shift solenoid)(Shift Solenoid A). When there are problems with this shift valve and solenoid, it leads to number of 4L60E problems;
1). 4L60E no 1st gear.
2). 4L60E no 2nd gear.
3). 4L60E no 3rd gear.
4). 4L60E no 4th gear.
4). Etc.
Before we can address the problem areas, it's important to first understand the basics of how a healthy system works. Buckle up!
Note: the 4L60E 1-2 Shift Solenoid is also known as Shift Solenoid A.
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DISCLOSURE: 🕵
Links provided are affiliated links with the associated websites. While there is no extra cost to the purchaser, a small portion of the sale goes to support this KZfaq channel.