1997 Chevrolet Tahoe

I OWN 2 GM VEHICLES. A 1997 CHEVY TAHOE AND A 2005 GMC YUKON. THE CHEVY TAHOE ISAND HAS(FOR SEVERAL YEARS) EXPERIENCING SEVERE COOLING SYSTEM MALFUNCTIONS AND HAS NOW TOTALLY FAILED REQUIRING EXPENSIVE AND EXTENSIVE REPAIRS. I HAVE ALWAYS FOLLOWED THE OWNER'S GUIDE AND THE MANUFACTURER'S RECOMMENDATIONS AS TO USING ONLY "DEX-COOL" COOLANT AND AS A RESULT IT'S USE HAS CAUSED THE DESCRIBED FAILURES TO OCCUR. THE USE OF "DEX-COOL" HAS CORRODED AND ERODED ALL OF THE COMPONENTS IN MY VEHICLE'S COOLING SYSTEM FROM THE WATER PUMP, RADIATOR, HOSES, THERMOSTAT, HEATING CORE, ETC. GM IS DENYING THAT "DEX-COOL" PLAYED ANY ROLE IN THESE FAILURES AND THEREFORE I MUST PAY OUT OF MY OWN POCKET FOR THE REPAIRS THAT GM KNEW WOULD RESULT FROM "DEX-COOLS" USE. MY VEHICLE OVERHEATED AND SHUT-OFF SEVERAL TIMES WHILE ON THE HIGHWAY AND EACH TIME I WAS AMID TRAFFIC TRAVELING AT "HIGHWAY SPEEDS". IT WAS VERY DANGEROUS! EACH TIME THAT IT OCCURRED I HAD THE VEHICLE TOWED IN FOR REPAIRS AND I WAS TOLD TO FLUSH AND REFILL WITH FRESH COOLANT AND THAT WOULD SOLVE THE OVERHEATING/SHUT-OFF PROBLEM. THE SERVICE WAS PERFORMED AS PER GM SPECIFICATIONS AND REQUIREMENTS EACH TIME. THIS MOST RECENT TIME IS WHEN THE COOLANT "SPILLED" OUT FROM THE WATER PUMP AREA AND LEFT ME STRANDED ONCE AGAIN. THIS TIME I WAS INFORMED OF THE PROBLEMS THAT NOW EXIST INSIDE MY COOLING SYSTEM AND THE EXPENSIVE COSTS THAT I WOULD INCUR FOR THE REPAIRS, REPLACEMENTS AND "FLUSHES" THAT WOULD BE NEEDED IN ORDER TO GET MY VEHICLE BACK ON THE ROAD. ALL OF THE VARIOUS MECHANICS AND RESEARCH INTO THIS MATTER HAVE ONE COMMON FACTOR AND THAT IS THE USE OF "DEX-COOL"! *TR

DT*: THE CONTACT STATED WHILE DRIVING THE VEHICLE ON THE HIGHWAY ON NORMAL ROAD CONDITIONS, THE ENGINE SUDDENLY STALLED WITHOUT ANY WARNING LIGHTS. IT WAS ALSO VERY DIFFICULT PULLING OVER AND CONTROLLING THE VEHICLE WITHOUT POWER STEERING AND POWER BRAKES. THIS FAILURE HAS BEEN OCCURRING SINCE JANUARY 20TH, 2006 AND IT HAS OCCURRED ABOUT 100 TIMES. THE VEHICLE HAS BEEN TAKEN 10 TIMES TO VARIOUS CHEVROLET SERVICE DEALERS FOR THIS PROBLEM. IT WAS ALSO TAKEN TO TWO AUTO REPAIR SHOPS WITH INDEPENDENT CERTIFIED MECHANICS. DIAGNOSTIC TESTING RESULTS FROM ALL DEALERSHIPS AND INDEPENDENT MECHANICS SHOWED NO MALFUNCTIONS.

WHILE DRIVING ON THE INTERSTATE AT 65 MPH RPM WENT UP TO 3000 AND THE VEHICLE STARTED TO SLOW DOWN,PULLED TO THE SIDE OF THE ROAD YOU COULD SMELL SOMETHING THAT WAS BURNT I MADE IT TO A GARAGE HAD IT CHECKED OUT I WAS TOLD THAT THE CONVERTER WAS BURNT IT GOT HOT AND BLEW TRANS FLUID OUT THE OVERFLOW AND THAT AT THE LEAST THE CONVERTER WOULD NEED REPLACED. *AK

THE VEHICLE EXPERIENCED STALLING AND NO STARTING. AFTER REPLACING THE FUEL FILTER AND THE FUEL PUMP RELAY, WITHOUT SUCCESS, THE FUEL PUMP ASSEMBLY WAS REMOVED FROM THE TANK. THE WIRING TO THE FUEL PUMP AND THE FUEL GUAGE SENDER WAS MELTED TOGETHER, AND A GREAT DEAL OF THE INSULATION WAS MELTED OFF ONE OF THE WIRES GOING TO THE FUEL PUMP. THE PARTICULAR WIRE THAT WAS MELTED/BURNT SHOWS SEVERE DISCOLORATION IN THE METAL OF THE WIRE ITSELF, AS IF FROM EXTREME HEAT. THIS IS ON AN IN-TANK ASSEMBLY!*AK