1998 Chevy Astro 6 cyl All Wheel Drive Automatic
98 Chevy Astro with 217,000 miles. Transmission operates normally and shifts smoothly until sustained speeds are driven. Then it revs higher and shifts very harshly. This continues until the engine is turned off even for a very short time, then the cycle starts over. Seems to be worse with warmer weather but I don't think it's an overheating issue because it doesn't cool down after only shutting off the engine for a few minutes. Could it be pressure build up?
have the same problem?
Friday, September 3rd, 2010 AT 6:00 PM