If a Trailblazer revs up but doesn't move, it could indicate an issue with the transmission, such as low fluid levels or a malfunctioning component. Other potential causes include a problem with the drive shaft or differential, or even a disengaged parking brake. It’s advisable to check for error codes and inspect the vehicle's systems to diagnose the issue accurately. Seeking assistance from a qualified mechanic is recommended for a thorough assessment.
steps
maybe because your transmission needs fluid.....if it revs up and doesnt move, your car is not shifting gears....either you need fluid, or a gear is stuck.....check your engine for fluid and see if it's low. if not, take it in and get the transmission looked at.
tune up chevy trailblazer
Turn the throttle, revs go up. Let to, revs go down.
If the engine idles and revs up okay in neutral, it is likely the torque converter clutch lock up solenoid.
age,temperature,time
sun
Because that's how an engine runs. it can only ever rev up if you give it gas. no gas, no revs. more gas, more revs
my 1998 Polaris Trailblazer has about 26hp and i have got it up to about 60mph
coal
my 307cc if started in gear pulls away no revs required even up hill
Transmission trashed.