There are 3 stored owner reports matching the powertrain & transmission leading-label group for the 2004 Buick Regal in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 3 of 3 matching reports.
Open the full vehicle complaint log (all categories)FROM A DEAD STOP, WHEN YOU ACCELERATE THE CAR HAS A HARD SHUDDER, TRANS SLIP...BELIEVE IT TO BE A TRANSMISSION PROBLEM AND A PROBLEM GM HAS KNOWN FOR SOMETIME WITH THEIR G4T60-E TRANSMISSION, MOST LIKELY A PRESSURE CONTROL SOLENOID PROBLEM OR CLUTCH ASSEMBLY.
TL* THE CONTACT OWNS A 2004 BUICK REGAL. THE CONTACT STATED THAT WHILE DRIVING 68 MPH, THE VEHICLE STALLED WITHOUT WARNING DUE TO A SHORT IN THE IGNITION. IN ADDITION, THE CONTACT MENTIONED THAT AFTER THE FAILURE OCCURRED, THE VEHICLE FAILED TO SWITCH GEARS. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 73,000. UPDATED 03/09/16*LJ *TR
THE FIRST FEW TIMES, THE VEHICLE LOST POWER AS I WAS BRAKING FOR STOP SIGNS. THE ANTI-LOCKS ACTIVATED, THE ANTI-LOCK WARNING CAME ON, AND THEN THE ENGINE REFIRED, THE DASH LIGHTS WENT OUT, AND IT RAN FINE. I BROUGHT THE VEHICLE IN FOR A COMPLETE TUNE-UP. THEN IT QUIT ON THE HIGHWAY AND THE IGNITION WOULD REFIRE. THEN IT QUIT ON AN ONRAMP AND I HAD TO SHIFT TO NEUTRAL TO RESTART IT. THE LAST TIME IT FAILED, I ATTEMPTED TO START IT IN A PARKING LOT. IT TOOK SEVERAL ATTEMPTS TO KEEP IT RUNNING. THE LAST SEVERAL TIMES THAT IT FAILED, ALL OF THE DASH LIGHTS WOULD BLINK ON AND OFF UNTIL I RESTARTED IT. THAT WAS THE CLUE THAT I SEARCHED FOR ON THE INTERNET. I FOUND THIS PARTICULAR WEBSITE AND I ALSO FOUND VIDEOS AND BLOGS OF MY PROBLEM. MY LOCAL MECHANIC DID HIS OWN RESEARCH AND WE CAME TO THE CONCLUSION TO REPLACE THE IGNITION CONTACT BLOCK. SO, I TOOK THE OLD IGNITION CONTACT BLOCK APART. THREE CONTACTS WERE BURNED. TWO WERE MILD, BUT THE THIRD ONE WAS SEVERE. I CAN'T TELL YOU WHAT CIRCUIT IT WAS FOR, BUT IT WAS THE LAST CONTACT AWAY FROM THE CIRCULAR OPENING ON THE SIDE WHERE THE RED AND THE ORANGE WIRES ENTER THE BLOCK. SINCE THE REPAIR, THE CAR IS RUNNING GOOD. DUE TO THE RANDOM NATURE OF THE PROBLEM, I CANNOT BE COMFORTABLE QUITE YET UNTIL I PUT A FEW MORE MILES ON IT. I FRANKLY DO NOT UNDERSTAND WHY GM DOES NOT ADMIT THAT THE SCOPE OF THEIR IGNITION SWITCH RECALL IS PROBABLY MUCH LARGER THAN THEY ALREADY ADMIT TO - UNLESS IT INVOLVES THAT MANY MORE CARS. I READ AN ARTICLE WHERE THEY ARE TELLING PEOPLE NOT TO HANG ANY WEIGHT ON THE IGNITION KEY UNTIL THEY CAN GET THEIR REPAIRS DONE. I JIGGLED AND PULLED ON MY KEY WHILE CAR WAS RUNNING OK BETWEEN BOUTS OF FAILURE: IT HAD NO EFFECT. THIS REPAIR COST ME $326.54 AND I AM HOLDING MY RECEIPT JUST IN CASE EITHER THE GOVT. OR GM DOES THE RIGHT THING AND REIMBURSES ME. I THINK I WILL LOOK AT FORD NEXT TIME. *TR
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.