4LO YES, BUT 4HI NO
#1
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Need help with my 4 wheel drive on my '93 GMC Jimmy with 153,0000 miles. It has the 4.3 motor.
Problem is that it won't engage into 4 wheel HI, It will engage in 4 wheel LO though. Where should I start to diagnos this problem. Nothing happens when I hit the switch on the dash. (4HI only). Please send help. Thanks.
Problem is that it won't engage into 4 wheel HI, It will engage in 4 wheel LO though. Where should I start to diagnos this problem. Nothing happens when I hit the switch on the dash. (4HI only). Please send help. Thanks.
#2
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I'm no expert by any means, but if it goes into 4lo, then all of the solenoids are probaly working and I would start by checking the 4hi button itself.
#3
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Check the vacuum actuator... I think it's under the battery, but might be in a different place on the 1st gen... Check a Haynes or Chiltons manual... Should be able to help locate it for ya.
#4
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Since I have 4LO working, wouldn't that mean the vacuem actuator is still good? Or do they work differently for each position?
#5
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ORIGINAL: bobslsc
Since I have 4LO working, wouldn't that mean the vacuem actuator is still good? Or do they work differently for each position?
Since I have 4LO working, wouldn't that mean the vacuem actuator is still good? Or do they work differently for each position?
I can't remember if the first gens had the option for the Auto function of the 4x4...
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