Question about 2004 Chevrolet TrailBlazer
Transmission will not shift from 3rd to drive
Posted by Anonymous on
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Posted on Jan 02, 2017
Fastboyz is on track with his answer.there are quite a few updates on your transmission for shift concerns. this is done with a tech2 scanner and reprograms computer. also if you have installed larger tires this will need to be updated. can cause problem also.Just because there is no trouble code does not mean it is not a computer related problem. have it checked for updates
Posted on Dec 03, 2008
A couple of days ago my brake lights on my 2004 Chevy Aveo wouldn't work, so I attempted to remove the lamp covers to check the bulbs. Also, before this my shifter would get stuck in park and could only be released by pressing the unlock gadget next to the shifter. Back to the brakes...Well, you open the trunk and remove the two screws just like the manual said, but it was very hard to pull off. There's 2 prongs holding the other half of the light on. The lamp will come loose by prying it (very hard). You think the cover will break, but it'll come loose. The bulbs were all OK.
After much frustration and internet info, the STOP LAMP SWITCH, GM#96436331 ($9.30 at Chevy dealer), which is located under the dash and has contact with the brake pedal, was defective. Once replaced, both my brake lights AND SHIFTING problems were cured. So if the brake lights suddenly don't work or you have problems getting the vehicle out of park, check the switch by pushing the prong (end that has contact with brake) of the switch in and out. If it doesn't retract smoothly...that's the PROBLEM. Good Luck.
Posted on Sep 11, 2009
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