2005 Chevrolet Trailblazer

THE HEADLIGHTS WILL DIM WHEN DRIVING THE VEHICLE. THIS CAN OCCUR WHEN IDLING BUT MOSTLY HAPPENS WHEN THE VEHICLE IS AT HIGHWAY SPEED. THIS HAS HAPPENED SEVERAL TIMES AND TWO DIFFERENT DEALERS HAVE CHECKED THE PROBLEM AND PERFORMED ALL APPLICABLE TSBS AND REPLACED THE BCM WITH NO DIFFERENCE IN THE PROBLEM. THE LIGHTS WILL DIM ENOUGH THAT WHEN DRIVING ON DARK COUNTRY ROADS I AM NOT ABLE TO IDENTIFY THE EDGES OF THE ROAD. TECH SUPPORT CLAIMS THIS IS NORMAL OPERATION OF THE SYSTEM. *JB

I AM EXPERIENCING THE SAME LIGHT DIMMING/VOLTAGE DROP ISSUE ON MY '05 CHEVROLET TRAILBLAZER THAT I SAW REPORTED BY MANY OTHERS ON THE WWW. VEHICLE HAS BEEN IN TO DEALER TWICE FOR THIS ISSUE, I AM TOLD THAT LIGHTS DIMMING DURING QUICK DECELERATION WAS NORMAL, AND CAUSED BY AIR PUMP. WHILE GM MAY CONSIDER THIS NORMAL, I OBJECTED TO THAT CHARACTERIZATION AS ITWAS NOT ACCEPTABLE TO HAVE HEADLIGHTS AND ENTIRE ELECTRICAL SYSTEM DIMMING RANDOMLY WHILE DRIVING, ESPECIALLY AT NIGHT. THIS PRESENTS A LEGITIMATE SAFETY ISSUE. HOW CAN WE FORCE GM TO ADDRESS THIS ISSUE? *AK

2005 CHEVROLET TRAILBLAZER LS 4WD SPEEDOMETER FAILED AS DRIVING DOWN THE FREEWAY. WAS GOING APPROXIAMATELY 60 MPH AND SPEEDOMETER REGISTERD 10 MPH. IT CORRECTED IT SELF AND FOR A COUPLE DAYS IT WAS FINE AGAIN. THEN IT STARTED REPEATING SAME FAILURE, AND STAYED THE SAME. IT WAS TAKEN INTO A GMC DEALER AND THE REPAIR WAS DONE. THE SPEEDOMETER WAS REPLACED, WITH A TOTAL BILL OF $463.09, PAID MY MYSELF, SINCE THE WARRANTY WAS JUST BARELY OVER.

MY HEADLIGHTS DIM WHILE DRIVING ,FIRST NOTICED WHILE DRIVING ABOUT 25 MI. FROM HOME AND THEY WOULD GO DIM AND THE GAGE WOULD DROPBELOW 14 AND THEN THEY WOULD BRIGHTEN UP AND THE GAGE WENT ABOVE 14, HAS DONE THIS ON SEVERAL OCCASIONS DEALER TOOK IT HOME OVER NIGHT TO SEE WHAT WAS GOING ON AND OF COURSE IT DIDN'T DO IT , HE SHOWED ME A PRINT OUT THAT SAID NOT TO REPLACE THE ALTERNATOR THAT THERE WAS NO PROBLEM WITH IT, IT CONTINUES TO DO THIS AND IT SEEMS TO ME THAT THERE IS A PROBLEM BUT UNTIL THEY SEE IT I'M JUST STUCK WITH IT , ANY SUGGESTIONS!. *AK

WHILE DRIVING AT NIGHT (MORE NOTICEABLE), THE HEAD LIGHTS APPEAR TO DIM THEN BRIGHTEN (FLASHING THE VEHICLE AHEAD). WHILE THIS IS OCCURING, THE BATTERY GAUGE BOUNCE DRASTICALLY FROM MIN TO MAX THEN BACK TO THE MIDDLE. THIS HAS BEEN OCCURING SINCE THE DAY I BOUGHT THIS VEHICLE JUNE 05. ALSO WHILE THIS OCCURS, THE VEHICLE TENDS TO LOSE RPM POWER SO AS YOU ARE DRIVING THERE IS A "JERK" IN THE FORWARD MOTION. *JB

WHEN I START UP MY TRAILBLAZER AND DRIVE OFF THE HEADLIGHTS AND DASH LIGHTS FLASH AND FLICKER. I HAVE TAKEN TO THE DEALERSHIP TWICE FOR REPAIRS AND THEY FIND NOTHING WRONG, AND GAVE ME A BULLETIN FROM GM THAT STATED THIS IS A NORMAL OPERATING CHARACTERISTIC DUE TO A SECONDARY AIR PUMP DIAGNOSTIC ROUTINE, AND THAT THERE IS NOTHING TO FIX. I THINK THIS IS WRONG. THE LIGHTS FLASH SO MUCH PEOPLE THINK I AM FLASHING MY LIGHTS AT THEM. IF I SIT AND IDLE FOR 30 SECONDS OR SO, SOMETIMES THAT HELPS, SOMETIMES IT DOESN'T (THIS WAS GM'S "FIX"). IF IT'S COLD I HAVE TO IDLE IT FOR SEVERAL MINUTES, AND EVEN THEN IT DOESN'T ALWAYS STOP IT. I HAVE HAD TO PULL OFF TO THE SIDE OF THE HIGHWAY, STOP MY ENGINE, START IT AGAIN, WAIT SEVERAL MINUTES, THEN MERGE BACK INTO TRAFFIC AND JUST PRAY THE LIGHTS DIDN'T START FLICKERING AGAIN. THIS SHOULD BE MADE A RECALL AND THEY SHOULD BE FORCED TO FIX THIS. I HAVE CONTACTED THEM REPEATEDLY AND GOT NOWHERE WITH THEM. *JB

MY VEHICLE WAS REPURCHASED BY GM RECENTLY. THE DEALERSHIP THAT HANDLED THE TRANSACTION WAS VANDERGIFF CHEVROLET IN ARLINGTON, TX. THEY DID NOT RESPOND TO MY CALLS. THEY IGNORED MY REQUEST. THEY DID NOT FOLLOW THROUGH ON THE PAPERWORK REQUIRED BY GM, AND THEY LIED TO GM AND MYSELF REGARDING FILING THE "WARRANTY' WITH GM RESULTING IN ADDITIONAL TIME THAT I HAD TO WAIT IN ORDER TO HAVE THE VEHICLE PAID OFF TO MY LOAN INSTITUTE AND THE REMAINING FUNDS TO ME SO THAT I COULD ACQUIRE ANOTHER VEHICLE. *NM