NHTSA Complaint #11092607 — 2008 CHEVROLET SILVERADO 2500

DURAMAX LMM DIESEL ENGINE HAD ALL 8 GLOW PLUGS FAIL ONE AT A TIME. REPLACEMENT GLOW PLUGS FROM GM HAVE A HIGHER VOLTAGE RATING ON THEM INDICATING GM WAS AWARE THESE WILL ALL FAIL IN TIME. THE ORIGINAL GLOW PLUGS VOLTAGE RATING MADE THE ENGINE START QUICKER LESS TURNOVERS AT THE EXPENSE OF THE OWNER WHO HAD TO REPLACE ALL THE ORIGINAL GLOW PLUS AS THY FAILED AFTER THE WARRANTY PERIOD. FEW FAILED DURING WARRANT AS OTHER REPORTED AND MOST FAILED MONTHS TO YEARS AFTER THE WARRANTY. IN M CASE THEY ALL FAILED AT YEAR 7 OF OWNING THE TRUCK AND ALL FAILED OPEN DUE TO THIS OVER VOLTAGE THAT GM CORRECTED IN THE REPLACEMENT GLOW PLUG. REPAIR WAS NOT CHEAP AND COULD LEAVE YOU STRANDED AS THE GLOW PLUGS FAIL AND ARE NEEDED TO START A COLD MOTOR IN A COLD CLIMATE. GM SHOULD REPLACE OR REIMBURSE OWNERS FOR THESE KNOW TO FAIL GLOW PLUGS. ORIGINAL GLOW PLUG VOLTAGE RATING 4.72V, REPLACEMENT GLOW PLUG RATING 4.85V. DEFECTIVE GLOW PLUGS CAUSES CHECK ENGINE LIGHT TO COME ON AND SETS PCM CODES AS WELL AS HARD STARTING AND EXCESSIVE CRANKING TO START. UPON START ENGINE COULD BE VERY ROUGH AS IT RUNS WITHOUT THE CYLINDER THAT HAS THE FAILED GLOW PLUGS.