I have been reading many threads and will continue, but I am hoping someone will chime in with a similar experience. I changed the plugs and cleaned my throttle body today. The TB was absolutely filthy, and I may have been a little hard on it (holding it fully open while cleaning)? Never had an issue with other cars. This is my first Trailblazer.
I disconnect the PCM fuses for 30 minutes, went to start her up and it would not crank. Dash lights and headlights were on, the battery had full power, but no crank. Disconnected the PCM again for about 1 minute and got her to start, but the SES and REP lights are on. The car idles over 1000, then almost dies, then back to 1000 again. Pressing the throttle pedal results in no change in engine rpms.
Did I toast my throttle body? The harnesses appear fine, all sensors are connected, etc. Does anyone have any ideas short of my brining it to Firestone? I can get to Firestone without a tow, but not to the dealer (max speed is like 10 mph)..
So much for a quick afternoon plug change and TB clean...
I disconnect the PCM fuses for 30 minutes, went to start her up and it would not crank. Dash lights and headlights were on, the battery had full power, but no crank. Disconnected the PCM again for about 1 minute and got her to start, but the SES and REP lights are on. The car idles over 1000, then almost dies, then back to 1000 again. Pressing the throttle pedal results in no change in engine rpms.
Did I toast my throttle body? The harnesses appear fine, all sensors are connected, etc. Does anyone have any ideas short of my brining it to Firestone? I can get to Firestone without a tow, but not to the dealer (max speed is like 10 mph)..
So much for a quick afternoon plug change and TB clean...
