Hi everybody! I'm not completely auto savvy, but I'm learning. I have been having problems with my '07 Grand Prix GXP. 5.3 L V8 140,000 miles. My transmission takes forever to switch gears, I have this clicking sound when I turn ( multiple auto shops have told me that it wasn't my cv axles ), and my engine light is on ( codes : p0443, p0030, p0036 ). Lately the car seems as if it just isn't getting gas, it kind of gets weak then it just takes off. Also I was told by a transmission shop that I was missing engine mounts. How many engine mounts should I have and any diagram available? I replaced the battery with an optima red top because the battery was extremely weak. I have taken it to a mechanic shop and they attempted to fix the transmission but could not prevail. I'm about to buy one from a salvage yard just to replace transmission and extra parts. Salvage yard car engine is in great condition. Could this problem be my fuel pump, oxygen sensor, or is it just my transmission...?
And also, I want to upgrade this car under the hood. Any suggestions? Engine swaps?
And any suggestions of salvage yards that would have this particular vehicle? I know that it wasn't mass produced.
And any ideas on a good double din cd player that would fit?
Sorry to bombard with questions but I'm new to the site and this car. This car has been a major headache but I love the performance from the vehicle along with comfortability. I would like to keep this car but I also don't want to invest over $2000 fixing it. Thank you for your time guys.
-Brian
