Hello,

I bought my 03 Monte Carlo SS 8 months ago and have so far incountered 90% of the common problems these have haha.

I work and fix everything myself and am learning as I go, and this site has helped me quite a bit...

Hopefully someone can answer a few questions I have...

1. What cars are compatible to use for parts?
(I bought a 02 gram prix 40th anniversary)
for mainly the transmission, but I would like to use whatever I can off of it.

 

Unfortunately the '03 SS was a one off year for the transmission. Any prior or later year is incompatible. The ID tag is on the back side of the differential and will have a number and 2 large letters. Those letters have to match.

Here's an example: 4T65E ID Tag Info

As for the other stuff, assuming the Grand Prix has a 3800 engine, everything should be compatible. Axles and suspension, EVAP system and most electronics should be the same too.

 

Thank you, and yes it is a 3.8. After I posted this post I entered both vin numbers on the Chevrolet site and both transmissions came up with the same specs?

 

Specs. would be the same, but internal electronics are different. I learned this from Dave at Triple Edge Performance when I needed to replace the trans. on my "03 SS. Dave is a great resource for information on the 4t65e and is always willing to help.

 

Thanks for the information, much appreciated.

I have another question that has me stumped..

My heat/AC only works on setting 1 & 5.
I bought a new blower motor and heater resistor and it's still the same thing!!
I looked at the connections in both ends and everything looks bran-freaking new.... ��
I also checked all the fuses and everything was good...
I don't know what the next step would be??

 

I suggest starting a new thread for that problem, but most likely the next likely culprit would be the HVAC control module.

Check out this thread:
https://montecarloforum.com/forum/mo...r-relay-56788/

 

Do forget to put those roof rails from the grand prix on your monte if you like that kind of look. It should have them being that it's a 40th anniversary. Or post them for sale someone might pick them up off of you