What To Do If The 4L60E Transmission Starts Acting Up In Your 1995 Z28

Posted by on Tuesday, January 20th, 2015

The 4L60E is a four speed automatic transmission designed and built by General Motors. It is heavily based on the very first automatic over drive transmission built by General Motors, the 700R4. Besides some fixes to repair very early 700R4 transmissions, the biggest difference between the two in that the 4L60E is a full electronic transmission.  The 4L60E transmission comes from a family of transmissions that include the 700R4, the 4L60 and the 4L65E. The 700R4 is equipped with a very steep 3.06:1 first gear ratio which help give this transmission and the vehicle it is installed in excellent off the line performance.

Likewise, the 4L60E is equipped with a very sweet over drive gear ratio of 0.70:1 (30% over driven) that really helps increase gas mileage, especially at highway speeds.  The 4L60E found its way into many GM vehicles, including the Chevy Suburban, the Corvette, The Impala SS, the Silverado full size pickup truck, the GMC Jimmy and the S-10 Blazer. It could also be found in the Chevrolet Camaro.

Chevy Camaro Z28

A Z28 from 1972. Image from Wikimedia Commons

The origins of the Camaro go all the way back to 1967 when it was introduced to compete directly with the Ford Mustang. Over the years the two vehicles have been engaged in a performance and horsepower war. The 1995 Camaro was built during the second year of production of the fourth generation Camaro. While the standard Camaro was equipped with a weak V6 engine, the Z28 model came with a very hot 5.7 liter LT1 350 cubic inch engine. Other upgrade on the Z28 included a performance suspension, performance rear axle and a performance 4L60E transmission.

Over the years, many thousands of Z28 wear built during the run of the fourth generation Camaro. S time has marched on, these car have become increasingly inexpensive to purchase in the used car market. When you buy a used car, you’re never 100% sure of what you are getting until you’ve had a chance to put some miles on your new purchase.

So what do you do if the 4L60E transmission in your newly purchased used Z28 starts acting up? Here are a few clues.

The first thing you should do is run a scan of the cars computer, sensors and solenoids. This quick and easily performed scan can tell you a lot, and many prevent costly replacement of parts that are not really defective

The next thing I would do is take the care in for a transmission tune up. This should include a complete fluid exchange, the flushing of the transmission lines and transmission cooler, a new filter and the re-adjustment of the transmission bands.  At this time I would also take the opportunity to upgrade to a synthetic transmission fluid. You have a great car that, with any luck, will last you a long time. Take care of the transmission to make sure of that.

If you’re looking for a quality remanufactured transmission, then you won’t do better than ETE REMAN. That’s why we offer a three-year/unlimited mileage warranty on all our products. Browse our online catalog and contact us today.

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