Engine check light came on, checked codes and got P0420, Catalytic Converter low efficiency. Reset the code and have been driving for couple days with out light coming back on. Mechanic suggests that since I do a lot of very short trips to get it out on the road and really get the system heated...
What is the latest theory? Do you rotate the oem run flats or not. When I first bought the car 7 years ago the dealer said no. Now I am hearing yes..
What is the current practice? thanks I am taking the car in for routine service this month and would like a heads up.
JIM
I need to take my car in for service soon. I have about 6k on the tires. What is the current thinking about rotating the tires. Do we or don't we. When I first bought it 6 years ago the dealer said no. But chatting with another owner he said he was told to rotate every 10 K..
Any thoughts...
Most of my trips in the xlr are quite short and usually the temperature guage never changes from the temperature in the garage. If I go on a longer trip, say 1/2 hour the temp guage seems to update properly.
Is this normal on the x? My other gm cars update constantly and immediately.
Also is...
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