2004 GMC Sierra 1500

I HAVE A 2004 GMC SIERRA EXT. CAB TRUCK WITH ABOUT 70K MILES ON IT. IN THE PAST WEEK, THE SPEEDOMETER STARTED READING HIGHER THAN 120 MPH WHILE DRIVING. I WAS ONLY DOING AROUND 50 MPH. WHEN STOPPED IT READS AROUND 60 MPH. I CAN START AND TURN OFF THE ENGINE SEVERAL TIMES AND THE SPEEDOMETER NEEDLE WILL DROP AROUND 10 MPH EACH TIME IT STARTS. WHEN IT GETS TO 0, IT WILL READ FINE FOR A LITTLE WHILE AND THEN GRADUALLY START CLIMBING UP PAST 120 MPH AGAIN. 2ND COMPLAINT. AROUND EVERY 20K TO 25K MILES, I HAVE TO TAKE THE TRUCK TO THE DEALER AND HAVE A NEW STEERING COLUMN GREASE PACKING KIT INSTALLED BECAUSE THE STEERING COLUMN STARTS KNOCKING IN THE ENGINE COMPARTMENT. THE FIRST 2 TIMES IT WAS DONE WAS UNDER WARRANTY, NOW THE WARRANTY IS UP AND IT NEEDS ANOTHER PACKING DONE. THE DEALER WANTS ME TO PAY FOR THIS ONE. THIS HAS BEEN AN ONGOING PROBLEM SINCE I BOUGHT THE TRUCK BRAND NEW. *JB

MY GMC SIERRA CREW CAB K1500 Z-71 SPEEDOMETER BEGAN MALFUNCTIONING AROUND 37,000 MILES. IT WILL STICK AT 0, OR SOMETIMES AT 20 OR 50. THE PROBLEM IS INTERMITTENT AND GETS BETTER SOMETIMES IF I STOP AND TURN OFF THE ENGINE. NOW VOLT METER IS NOT WORKING PROPERLY. THIS IS A SAFETY HAZARD, SINCE I CAN'T TELL THE MPH THAT I AM DRIVING. I REGULARLY CARRY MY 2 SMALL SONS AND THIS IS QUITE SCARY. I HAVE NOTICED THAT THIS IS A RECURRING PROBLEM WITH MANY GM PRODUCTS THIS AGE. GENERAL MOTORS HAS A MAJOR PROBLEM HERE ! *NM

I HAVE A 2004 GMC SIERRA Z71, AND THE SPEEDOMETER HAS BEGUN TO PERFORM ERRATICALLY. IT NO LONGER RETURNS TO 0 WHILE STOPPED, AND NEVER GOES BELOW 35 MPH. THIS HAS JUST BEGUN, AND APPARENTLY JUDGING BY THE NUMBER OF SIMILAR COMPLAINTS (OVER 350 IN ONE FORUM ALONE) I HAVE FOUND ON WEB FORUMS THIS IS A VERY WELL KNOWN PROBLEM TO GM. *JB

I HAVE A 2004 GMC SIERRA THAT HAS A MALFUNCTIONING SPEEDOMETER. IT SHOWS READING ANYWHERE FROM 0-100 MPH OVER WHAT YOU ARE TRAVELING AT. WITH THE TRUCK TURENED OFF - THE SPEEDOMETER WILL SHOW IT AT SPEEDS OF UP TO 100 MPH. THIS ALL STARTED AT ABOUT THE 40,000 MILE MARK. WE PREVIOUSLY HAD A 2004 CHEVY 5500 TRUCK THAT TOO BEGAN W/ SPEEDOMETER TROUBLE AT THE 40,000 MILE RANGE. WE KNOW SEVERAL OTHER PEOPLE WITH A 2004 CHEVY/GMC ALL OF WHOM HAVE THIS SAME PROBLEM. CHECKING AROUND THE INTERNET AND IT APPEARS THAT THIS IS A HUGE PROBLEM THAT SHOULD WARRANT A RECALL BEFORE SOMETHING TRAGIC COULD HAPPEN.

I HAVE A 2004 GMC SIERRA. FOR THE LAST 3 MONTHS THE SPEEDOMETER HAS BEEN ACTING FUNNY. AT TIMES IT WILL SAY I AM DRIVING A LOT SLOWER THAN I ACTUALLY WAS. FOR EXAMPLE, THIS MORNING, IT SAID I WAS GOING 10 MPH AND I WAS PROBABLY GOING ABOUT 30-35 MPH. I TURNED OFF THE VEHICLE AND IT RESET. YESTERDAY WHILE DRIVING ON A TRIP, THE SPEEDOMETER STUCK ON 75 MPH. I DID NOT REALIZE IT UNTIL CARS STARTED PASSING ME ON THE INTERSTATE AND WHEN I CHECKED MY GPS SYSTEM, IT SAID I WAS GOING AROUND 60 MPH. THE SPEEDOMETER IS JUST ALL OVER THE BOARD. SOMETIMES THE SPEED IS CORRECT, SOMETIMES ITS SLOWER AND SOMETIMES ITS FASTER. I BELIEVE THIS IS A REAL SAFETY CONCERN SINCE THE DRIVER DOES NOT KNOW HOW FAST THEY MAYBE REALLY GOING. I HAVE CHECKED ON THE INTERNET AND IT LOOKS LIKE THIS IS A COMMON PROBLEM. *JB