2004 chevy trailblazer, 65,000 miles....check ingine light on... when I press the gas pedal it bogs down... also, yesterday the car stayed idel at 40 mph without my foot on the gas pedal

Check the adjustment and condition of the brake light switch located above the brake pedal. If it's out of adjustment, it will shut down the cruise.

no- no recall on the fuel tank that cracks at the filler neck the following link are complaints about fuel tank that are recieved if you go to home page and enter trailblazer they give you the break down of the whole series of model and complaints as well as recall information they also list the TSB technical service bulletins
2004 Chevrolet Trailblazer Crack In Fuel Tank

Hi, what do you mean by chugs at 48 mph ? Doesn't it go any faster then 48 mph, does it lose power, bog down when you press the gas pedal to the floor. Does it have a misfire , that makes the vehicle buck and jerk ! Is the check engine light on or any other lights for that matter ? How many miles are on this trailblazer ?

Hello John Hightower,

Your light SES would be coming on because the associated
element seems to be failing (Click here)
2004 CHEVROLET TRAILBLAZER 5 3L V8 Throttle Position Sensor TPS RockAuto

Aditional item data
More Information for AIRTEX WELLS 5S13583

Once you get that 977000 par number.. THEN
YOU CAN Shop for better prices 977000 on eBay or AMAZON..

Hope this helps


Carnac the Magnificent

BE MORE SPECIFIC

sounds to me like the throttle cable broke or is out of adjustment.

no, idle air control valve is literally to control your idle speed.
what happen when you press on gas? car shakes, RPM goes up, or engine just bogs down?

sounds like you have slipping clutches in the transmission , it needs to be overhauled

It can be your CO2 sensor. And another one that all ways makes the check engine light come on is your gas cap be for you turn your car on make sure your gas cap is on like 3 clicks then go clear the codes. If that doesn't help then good luck

Po codes are a default, reset the computer by removing the battery cable for 10 mins.

this will reset the comp back to 0's.