2000 Pontiac Grand Prix ac blower/ transmission

for the blower,check the blower resister,they overheat and burn very common problem.as far as the code,follow this info,Subject: Whine Noise In Park Or Neutral, Service Engine Soon or Service Vehicle Soon Lamp Illuminates (Replace Drive Sprocket Support Bearing) Models: 1999-2000 Buick LeSabre, Park Avenue/Ultra, Regal, Riviera 1999-2000 Chevrolet Lumina, Monte Carlo, Venture 2000 Chevrolet Impala 1999 Oldsmobile Eighty Eight 1999-2000 Oldsmobile Intrigue, Silhouette 1999-2000 Pontiac Bonneville, Grand Prix, Montana with 3.4L, 3.5L or 3.8L Engine (VINs E, H, K, 1-- RPOs LA1, LX5, L36, L67) and Hydra-Matic 4T65-E Transaxle/Transmission (RPOs MN3, MN7, M15) This bulletin is being revised to add the Chevrolet Impala to the models affected. Please discard Corporate Bulletin Number 00-07-30-007 (Section 07 - Transmission/Transaxle). Condition Some owners of the listed models equipped with a Hydra-Matic 4T65-E transaxle with a Julian Date prior to 0045 may comment on a whine noise in PARK and/or NEUTRAL or a Service Engine Soon or Service Vehicle Soon lamp that is illuminated. Upon investigation, a DTC P0741 or P0742 may be found. Cause The above condition may be due to drive sprocket support bearing fluting and/or bearing failure. Correction Replace the drive sprocket support bearing. Inspect the channel plate and drive sprocket for any abnormal wear, Turbine shaft for cut seals and/or nicks, and chain for excessive play due to failed bearings. Important : When installing the new bearing, the part number MUST be visible (facing upward). Before installing the drive sprocket, lubricate the bearing assembly with J 36850 assembly lubricant. Refer to the 4T65-E Unit Repair Section for the installation procedure.

post back with what you find.

so I would have to find this info on the transmission?
I'm not going to be able to do this, would a mechanic do this ? Is there any other way to find the problem?
Also I have recently noticed that the check engine light only comes on after driving for 25 mins or more then if I let it sit the light goes off and the problem goes away.
Also I noticed when I have it in drive and I am driving along if I let off of the gas the RPM gauge goes down about 1 grand and when I reapply pressure to the gas it goes back up 1 grand before it feels like it is going again like it is in neutral until it gets there. if I drive in 3rd 2nd or first gear it does not do this?? it drives normal!
Last another thing I noticed is SOMETIMES I hear a sound that sounds like the noise your powersteering pump makes when it is going out only this sound does not change when you move the steering wheel it changes with the RPMS of the engine/transmission. not the speed of the car but the speed of the engine/ transmission.. thank you in advance, JOHN.

before you do anything,these vehicles only came with a 4T65-E trans,the info above fits the problems you describe,the check engine going on and off is an intemittent problem.scan it for any codes.what is the VIN I will tell you what trans it has.

My VIN is :1G2WP12K9YF182305

As far as the code goes, everytime that it comes on I have it scanned and it always comes back with the P0742.

Thanks,
John

I would just follow the info for p0742,also check the fluid level and make sure the fluid isnt burnt.