Gordon Kehler, Author at Transmission Digest
Diagnosing an unusual problem: A slow-to-respond solenoid

A 2001 Chevrolet S-10 pickup came into our shop the other day. This job started with a concern of the engine revving high and not shifting correctly. With the truck being equipped with a 4L60E transmission, I expected to find non-functioning third and fourth gears, which is a common failure for these transmissions. I scanned

What to do when the right fault codes aren’t set

In this situation, we replaced the transmission in a 2004 Chevrolet Trailblazer and when the owner returned for a 15-day recheck, he mentioned that he had felt a hard shift at times. During my checks I found P0748 (Pressure Control Solenoid A Electrical) stored in the PCM history along with P0455 (Evaporative Emission Control System

Erratic Downshifting Ford F-250

Our shop recently took in a 1995 Ford F-250 with erratic downshift concerns. I started the initial evaluation with a visual inspection, fluids check, and a code scan. When scanning for codes, I was a little surprised that there weren’t any stored; per the customer concern, I was expecting an MLPS or a VSS code