Question about 1997 Chevrolet Suburban
Your actuator works by heating a specific gas and expanding the actuating rod. It is typically about 20-30 seconds. They work faster in warm weather and may not work at all in cold weather if they are old. Check your fuse box for a bad fuse, on my '97 it is # 24. If the fuse is good, your atuator appears to be working. It is just slow. There is a way to upgrade the actuator. Do a search on Amazon for Dorman #600-101 and the appropriate harness, 600-600. The harness plugs in to your original harness and then into the actuator. An extra long wire goes over the tranny to the transfer case wiring block, where you wire into the brown hot wire. Or you can replace the original with Dorman part # 600-100. It will probably work just fine. GM designed the front axle to engage after the transfer case, with a bit of a delay. That's what the original actuator does. The updated actuator is much quicker (2-3 seconds), but most folks have not found this to be an issue. It worked fine on my'94 Dually.
Posted on Nov 07, 2010
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Posted on Jan 02, 2017
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