- Dec 5, 2011
- 690
This is all happening while driving. The RPMs will started to bounc 100rpms at a time. So like 1500RPM to 1600rpm then back to 1500rpm. From what googleing I have done other people have had this problem too just not on the trailblazers. I did search Trailvoy and nothing helped. What it seems to be from my google fu is a Tranny, and possiably Intake manifold leak or something. It happens mostly around 50-60mph. I'll get some video later today.