Erratic Shifting of the Automatic Transmission on Chevrolet Monte Carlo

The transmission pressure control solenoid may fail causing erratic shifting. Our technicians tell us that partial dis-assembly of the transmission is necessary to replace a failed pressure control solenoid.

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Average mileage: 125,100 (89,000–195,000)
5 model years affected: 2000, 2001, 2002, 2005, more2007
18 people reported this problem
10 people shared problem details
Lately, the car is having large difficulties shifting, or won't shift at all. We replaced the transmission filter, and got more transmission fluid, but it still has a hard time with shifts when it's exceptionally cold outside.
Starting at a stop light, it jumps from first into second. Like a slip. When changing into third or fourth(whatever the last gear is) it makes a little skip. sometimes the starting from stop, it CLUNKS loudly. transmission fluid changed, but still does it.
New transmission solenoids.
don,t go n overdrive
The pressure solenoid went out on my monte at 88500 miles. shifting became erratic and eventually it failed to shift at all. complete rebuild had to be accomplished due to over pressures screwing everything else up.
Trans jerks when shifting.
SOMETIMES, sitting at stop, transmission CLUNKS, and goes into second. I told repair shop it sounds like the bands are slipping; he said , tthis transmission does not have "bands" like the old cars.
will not shift into 3rd gear
Erratic shifting when climbing hills or trying to merge onto highway
I bought this car used with 100000 on it. The day I drove it off the lot it started shifting harshly accelerating and decelerating. I ended up getting the Pressure Control Solenoid replaced and that solved the problem. Now at 125,000 mi I am experiencing a different problem with erract shifting and I am hoping its not going to cost me another $700.
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