NHTSA Complaint #769650 — 1997 GMC SUBURBAN

EXAMPLE OF PROBLEM, WHEN THE TRUCK HAS RUN 50 MILES OR SO ON THE FREEWAY, STOP AT OFF RAMP. THE TRUCK SHIFTS HARD FROM 1ST TO 2 ND WHEN I PULL AWAY. THIS CONTINUES UNTIL I SHUT THE TRUCK OFF, WAIT A FEW MINUTES AND START AGAIN. THEN IT IS FINE FOR A WHILE AND WILL REPEAT THE SAME, SOMETIMES WEEKS APART, MORE OFTEN IN THE SUMMER MONTHS. MY DRIVING PATTERN IS ONE OF SHORT TRIPS, SO I GUESS THIS IS WHY MY PROBLEM IS SPARODIC. I HAVE READ MANY COMPLAINTS ONE WEB SITES ABOUT THIS PROBLEM WITH OTHER GM CARS AND TRUCKS,THE CODE #1870 SEEMS TO FIGURE IN MOST CASES, MOST PEOPLE HAVE HAD NO LUCK WITH GM, AND ARE STUCK WITH BILLS OF 2-3000 DOLLARS. I HOPE YOU CAN CHECK THIS OUT, SEEMS TO COVER GM CARS AND TRUCKS FROM THE 80S-01. THANK'S GRAHAM BROWN. DT