Crankcase (pcv) Problems of Chevrolet Trailblazer

Stabilitrak light comes on intermittently for no apparent reason. Have had brake fluid, brake pads, rotors, sensors and tires replaced. Traction control and abs checked; all is good. No cel code relating to this issue. Traction control off button doesn't work once light appears. There is no difference in driving when light is on. Still haven't figured out what causes it. Battery, power cords, and alternator have both had to be replaced do to issues with the voltage outputs. Now to replace fuse box and ecm due to more voltage output issues. Cel has had no indications of an ecm, fuse box, alternator, or battery problem until they were beyond repair (this also happened with other transfer case leak, loss of reverse gear, and front differential leak) . Cel comes and goes by itself at anytime with no difference in drivability or conditions. Each time it reappeard it's thrown different sensors and/or circuits failing or high/low voltages including O2, maf, tps, evap system, wheel speed, fuel pressure, oil pressure, steering wheel, gas and brake pedal position, air bag impact, just to name a few. My car has recently started going into limp mode at random due to this electrical issue. Only remedy for this problem is disconnecting the wiring harness and allowing the fuse box and ecm to cool down. And finally, my oil filler tube seal broke and oil was spitting out into engine bay. Coincidentally, my pcv valve tube had also broken, and the tube was hanging loose right in front of the oil filler tube. As a result, pcv tubing sucked up a large amount of oil into the air intake; with no check engine light illumination indicating any problems during the time of failure. My air intake system is nearly ruined (not to mention the $$$ I shelled out in oil) and the wear down on parts has been detrimental to the life of the engine. This car is nothing but a cash cow for gm.

See all problems of the 2006 Chevrolet Trailblazer 🔎.

The caller said that when she would be at a light the vehicle would stall. She would hit the gas pedal and the vehicle would hesitate before taking off. Engine service light came on/off. On July 25, 2005 dealer checked and reprogrammed automatic transmission control module( pcm). On July 29, 2005 dealer checked and replaced the pcm again , and on August 1, 2005 dealer replaced a 02 sensor. Dealer said they could keep and drive vehicle to see if that fixed the problem . Dealer would not give her a temporary vehicle to drive while she waited for her vehicle to be worked on. Dealer said the 02 sensor was the problem. Would not offer an extended warranty. Dealer will not give her enough money for it as a trade in.

See all problems of the 2004 Chevrolet Trailblazer 🔎.