Some of my gauges are hit and miss at working, so I assume is the steppers have gone bad. Any suggestions on a reliable shop to send the cluster into for a rebuild. I couldn't find any info in the older posts. Can the car be driven without the cluster while its being sent off? Thanks for any info

My 2005 Pontiac Bonneville gxp, with 85,000 miles on it will occasionally shift hard in all gears. Once the car is restarted. its back to normal, and shifts great. Anyone have an idea of what the problem might be? Thanks....

Does anyone know if the car can be tuned differently? The car was originally a GM corporate car from a northern state. I purchased it here in California when it had 3000 miles on it. The elevation here is about 500. Now, a few years back I took the car on a trip up to Montana, elevations around 4000 ...

I Have an 05 bonneville gxp, that gets poor fuel mileage. Runs great and smooth. 50,000 miles. Im comparing it to my previous car, that has the same engine and transmission. (2000 cadillac sls). Now i know the gearing is slightly different in the gxp transmission. Is there anything that can be done ...