I have a 94 Blazer 4X4 that will not engage into 4 high. When I stop and put it into N I can engage it into 4 Low and back to 2 wheel drive. But it wont go into high range. I hade the module replaced about 8 months ago and it has been working fine until today. Can any one offer some advice on what the problem is. It has me stumped. Thanks Tim
I don't know if this helps or not, but check for a vacuum leak. My 94 would not go into 4 High (I hadn't check 4 Low) earlier this year. The light would come on, but I knew coming up my driveway that 4 High was not working.Since spring was close so I figured on waiting for warmer weather. A couple months later the idle seem to be rough. I found a cracked vacuum hose buried in the back of the engine. Fixed the hose and on a lark I decided to try the 4 High and it worked.
Tim Gagn> I have a 94 Blazer 4X4 that will not engage into 4 high. When I stop and put
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