2002 Chevy Silverado 6 cyl Four Wheel Drive Automatic 100000 miles
My truck typically cruises around 2000-2200 RPM on the highway at 70-75 mph. Recently, on a long road trip, when I went to pass or to go uphill (when the transmission would normally down shift), the engine ramps up to around 3000 RPM, and then the tachometer goes nuts, jumping erratically between 3000 and 4000 RPM. If I don't immediately let off the gas, then a very fast clicking noise starts. After this, occasionally the truck will shudder once or twice.
Otherwise it runs very smooth. The transmission shifts almost seemlessly when accelerating below 3000 RPM.
Thanks in advance!
Added in edit: I don't think it has to do with the transmission, because I sat in my driveway yesterday and revved the engine up---it did the same thing in park.
have the same problem?
Tuesday, December 18th, 2007 AT 2:56 PM