My 2003 Chevy trailblazer was reading a code P0304 so i replaced the wires and the coils out and the truck ran fine for about a day then it threw out another code P0735 along with the code Po304. so while on the expressway driving at about 65 miles per hour my truck would not change gears, so i pulled over the truck would crank up with no problem and I could move the shifter to park and reverse but the truck would not move . any suggestions you may have to help sove this problem would be greatfully appreciated

SOURCE: 2003 Chevrolet K1500 4x4 multiple miss fire code P0300

IS IT POSSIBLE YOU GOT A WIRE CROSSED? or a plug is cracked and or gap closed up? i would check these. you have the 5.3? what kind of plugs are you running?

SOURCE: 2003 Chevy Trailblazer LT gear shift won't move out of park

The park shift lock needs adjustment. The solenoid that locks irt inplace maybe the cause of this

SOURCE: 2004 Chevy Trailblazer Gear Shifter Moves But Will

The end of the shift cable has broken, there is a plastic ring at the transmission end of the cable that breaks. You will need to have it towed to the mechanic.

SOURCE: 2004 chevy trailblazer shaking really bad in drive and reverse, check engine light is flashing ...changed spark plugs and coils but didn't help

could be a sensor...have it scanned...sounds like the problem....and good luck.

Randy T

• 11 Answers
• Posted on Aug 25, 2012

SOURCE: i can't get my 2003 trailblazer out of park. the gear shifter will move freely but it wont come out of park

Sounds as if your linkage may have become disconnect from the transmission.