ACDelco Professional D3984A Four Wheel Drive Actuator: Optimal Performance and Reliability for Your Vehicle Review

No thread for my '94 Chevy K2500 truck. Acted like it started and then stopped. Careful examination showed that the threads are different.

4x4 didn't work in 92 k2500. checked to see if I was getting voltage at the wiring harness so I knew the drivetrain was faulty. The exchange took about 5 minutes, works great.

Was the right product at the right price! The dealer bill was $350, and a poor quality replacement at a local parts store was $85. It was worth waiting for the right part and price. Thanks Revane, you saved me time and money.

The drive is correctly installed in the differential and works as it should. However, the plug did not match the original, so it took several minutes to replace it with the original with the soldering iron. Not as strong as the original with over 280,000 miles. But I doubt I'll need another one.

Works the same as the original what was in the car - ie takes some time to turn on depending on the temperature, but that's how they all are. Pretty strange system, but here it is. I didn't want to try to connect an updated and faster version with an electric motor, since I'm pretty lazy at heart.

I bought the AC Delco brand because it used to be the best for my Chevy. No longer! It's "professional quality" according to GM, but it's made in China! You might as well buy DORMAN or any other brand as long as cheap Chinese junk is what GM thinks is acceptable! Maybe next time I'll buy a Japanese car. At least Japanese trucks are made in America by American workers, at a company the US government has no obligation to rescue, and the parts are made in America by American workers!