Re: I have no gears in my transmisiion expect 1st, how do...
Does it get better when the vehicle warms up ? If it does a temp fix could be to replace tranny filter and flush with Lucus tranny fluid and see if it gets better.
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Yes , have a professional scan tool hooked up an check for DTC'S - diagnostic trouble codes , an look at sensor data . Then test main line pressure with a gauge . Can the shift solenoids be controlled with a bi- directional scan tool . This video is on a jeep but your trail blazer is electronically controlled as well .
. If the box has been performing as expected and this has just started ( manual box ) I would be checking the gear selector either on the side of the box -- in the selector levers or in the cable operation. As the movement for all three gears is in a forward direction and you may have a cable operation to select the gears check the cable for failure. It the selection is at the base of a steering column then check for failed bushes and if it is a top mounted lever directly into the gear box then check that the pin that pivots the gear lever is tight and not worn. I am reasonable confident that the problem is in the selection mechanism and not in the box proper.
If you'd said 1st and reverse I would have said clutch. First check your gear sgift rod for aligbnment. If it is out when you push the gear lever left to engage 1st your selector might be somewhere between 1st and 2nd. Next check all the linkage bushes for wear. Those also cause misalignment. Last thing to check is the gearbox itself for synchromesh damage.
when you say 'jamming',do you mean stuck in a gear?When they lodge a fault or numerous faults,the system goes in to 'limp home mode'.It stays in one gear,a sort of a get you home but I now I've got your attention,get me fixed mode. I cant find a code 90,even the conversion to P codes doesn't define this.It may be a manufacturer specific code, on engine it is 90 -camshaft timing adjust actuator open cicuit or short to ground. or 090-not used. on trans conversions,009xx-P09xx-not used. I suspect that my update for the codes needed hasn't been supplied to me. I shall do some more research for you if needed.
Check the fluid level and if it low top it up. However I doubt this will fix it. The bad news is that it sounds like your transmission has had it and the only solution is to get it repaired. Take it to a specialist transmission repairer for them to do a diagnosis, but expect bad news.
Check at the transmisiion where the link hooks up chances are it has come loose or stripped any vehicle will not start if the safety nuetral switch is in any position other than park or nuetral you may be able to move it manuallly with your hand to place it into any of these gears.
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