Question about 1994 Chevrolet K1500
Hello, I have a 94 Chevrolet 1500 (4X4 – 5.7 liter) with the 4L60E tranny. I had the tranny rebuilt a couple months ago. At the time, I had the upgrades done (servo, 3-4 clutch pack) to minimize the normal problems the 4L60E has been known to have. However, none of the electrical components were replaced. So, they are from my previous tranny that had 200,000+ miles on it.
A couple weeks ago, while driving at 75 mph on the freeway, the tranny instantly began to slip. As I slowed down, I found that 3rd gear was also slipping. After reaching slower speeds (against my desire at the time), I found that manual 1st and 2nd were fine. After getting off the freeway, I played with it and found that I could shift from manual 1 to manual 2 with no slippage whatsoever. I also found that occasionally I could accelerate to 45-50 mph (with the throttle under even pressure) in manual 2 and then I could shift into overdrive and the tranny would operate normally. This was occasionally. Most of the time, no matter what I shifted into from manual 2 it would simply slip (allowing the truck to accelerate to a max speed of 55 mph at 3500 rpm).
The tranny is under warranty. But, I’ve had limited success in getting an appointment to have it looked at. So, I’m forced to forge ahead on my own. I have driven the truck very little since the tranny failure. But, I have noticed that the times I have driven it the problem has gotten worse. In fact, this morning manual 1 and 2 were also slipping badly and my top speed was 25mph in all gears.
In talking to the guy that rebuilt the tranny, he suspected that the problem was electrical (this was based on the problem being intermittent).
Any ideas of what electrical component could cause the described problem? Thanks in advance for your input.
Very well could be taht the Computer is not recieving the Shift codes Correctly. Just for an Easy Solution, Remove the ECM Fuse from the Fuse panel for 2 or 3 Minutes to Reset the Computer and let me know what you get.
Posted on Dec 31, 2008
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Posted on Jan 02, 2017
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