91 k1500 4wd drive won’t engage
March 9th, 2019, 12:24 PM
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91 k1500 4wd drive won’t engage
The actuator for the 4x4 was bad so I replaced it. Before I installed the new one I checked it by plugging in the electrical connection and shifting into 4wd . The new actuator works properly but the 4x4 will still not engage and the indicator light won’t light up. What else could the problem be? Any thoughts would be greatly appreciated, thank you
March 9th, 2019, 1:27 PM
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So I just pulled the actuator and tried to lock the diff manually by usting a screw drive to depress the spring. It pushed in but the diff still didn’t lock. Also I noticed some metal in the gear oil so I’m thinking the diff is just shot
March 9th, 2019, 5:15 PM
#3
Check your passenger side axle and see if it will slide in and out of the tube about an inch. If so, the circlip that holds it in place has worn out. When this happens a shim falls in between the gears that engage the 4x4. Easy fix if this is the issue
March 10th, 2019, 6:56 AM
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I recently replaced the cv axle on that side. The old one completely sheared in 2 so maybe that could have caused the problem. It’s snowing here today so I will check it out when the weather clears . Thank you