The Pontiac Grand Prix was equipped with the 4T65E transmission and 4T65E-HD transmission in supercharged and 5.3L V8 models. But they aren’t without their problems though, so let’s look at some of the most common Pontiac Grand Prix transmission problems, look at cost estimates and figure out what you can do about them.
What Transmission Do I Have?
Pontiac Grand Prix Transmission Models
Pontiac Grand Prix: 4T65E Transmission
Pontiac Grand Prix: 4T65E-HD Transmission (5.3L and Supercharged)
Pontiac Grand Prix Transmission Replacement Cost Estimate
Pricing varies by model. To be 100% sure on pricing, have your VIN# handy and use our Get An Estimate feature to look up your transmission by VIN#.
Replacement Pontiac Grand Prix Transmission Prices:
| Transmission | Street Smart Transmission |
|---|---|
| 4T65E | 1935 |
What are the DTC codes related to Pontiac Grand Prix transmission problems?
| Trouble Code | Description |
|---|---|
| P0717 | Input/Turbine Speed Sensor Circuit No Signal |
| P0730 | Incorrect Gear Ratio |
| P0753 | Shift Solenoid 'A' Electrical |
| P0758 | Shift Solenoid 'B' Electrical |
| P1860 | TCC PWM Solenoid Circuit Electrical |
Pontiac Grand Prix Transmission Recalls
None Found
Pontiac Grand Prix Technical Service Bulletins (TSB)
TSB 04-07-30-028 – Transmission fluid leak from reverse servo cover – 4T65E Transmission
Problem – Transmission fluid leaks may be observed under the vehicle, which may be caused by a 4T65E reverse servo seal that can actually shrink in the cold weather below 20°F/-6.7°C
Solution – Replace reverse servo cover seal
TSB 02-07-30-022B – Usually harsh shifts, along with multiple transmission diagnostic trouble codes – 4T40E Transmission | 4T45E Transmission | 4T65E Transmission
2000 – 2004 Buick Century – 2000 – 2004 Buick LeSabre – 2000 – 2004 Buick Park Avenue – 2000 – 2004 Buick Regal – 2003 – 2004 Buick Rendezvous – 2000 – 2001 Chevrolet Lumina – 2000 – 2004 Chevrolet Cavalier – 2000 – 2004 Chevrolet Impala – 2000 – 2004 Chevrolet Malibu – 2000 – 2004 Chevrolet Monte Carlo – 2000 – 2004 Chevrolet Venture – 2000 – 2002 Oldsmobile Intrigue – 2000 – 2003 Oldsmobile Aurora – 2000 – 2004 Oldsmobile Alero – 2000 – 2004 Oldsmobile Silhouette – 2000 – 2004 Pontiac Bonneville – 2000 – 2004 Pontiac Grand Am – 2000 – 2004 Pontiac Grand Prix – 2000 – 2004 Pontiac Montana – 2000 – 2004 Pontiac Sunfire – 2001 – 2004 Pontiac Aztec
Problem – Drivers can experience unusually harsh shifts, along with the following DTC’s: P0716, P0717, P0730, P0753, P0758, P1860, P1887
Solution – Inspect, repair and/or replace the transaxle 20-way connector to the transmission wiring harness
TSB 00-06-04-037A – Harsh shifting with DTC’s P0716 and/or P0717 – 4T40E Transmission | 4T45E Transmission | 4T65E Transmission
2000 – 2002 Buick Century – 2000 – 2002 Buick LeSabre – 2000 – 2002 Buick Park Avenue – 2000 – 2002 Buick Regal – 2002 Buick Rendezvous – 2000 – 2001 Chevrolet Lumina – 2000 – 2002 Chevrolet Cavalier – 2000 – 2002 Chevrolet Impala – 2000 – 2002 Chevrolet Malibu – 2000 – 2002 Chevrolet Monte Carlo – 2000 – 2002 Chevrolet Venture – 2000 – 2002 Oldsmobile Intrigue – 2000 – 2002 Oldsmobile Aurora – 2000 – 2002 Oldsmobile Alero – 2000 – 2002 Oldsmobile Silhouette – 2000 – 2002 Pontiac Bonneville – 2000 – 2002 Pontiac Grand Am – 2000 – 2002 Pontiac Grand Prix – 2000 – 2002 Pontiac Montana – 2000 – 2002 Pontiac Sunfire – 2001 – 2002 Pontiac Aztec
Problem – Some drivers may experience unusually harsh gear changes, accompanied by a P0716 and/or P0717 DTC
Solution – This problem can be caused by an intermittent connection of the input speed sensor circuit at the transaxle 20-way connector
Common Pontiac Grand Prix Transmission Problems
Lack of Response
Leaking Fluid
Low Fluid
Burning Smell
Grinding or Shaking
Whining, Clunking or Humming
Refuses to Go Into Gear
Torque Converter Issues
Valve Body Issues
Transmission Noisy in Neutral
Gears Slipping
No 3rd or 4th Gear
No 1st or 2nd Gear
No Reverse
Dragging Clutch
Trouble Codes / Check Engine Light
Can I drive with a transmission problem?
If your Pontiac Grand Prix can still make it up and down the road, you might say “It’s fine, I’ll just drive it until I can get it fixed”. But that is not always a good idea, depending on the symptoms. You see, there are a lot of (very expensive) moving parts inside of a transmission, and if something isn’t right, continuing to drive with a transmission problem could damage something else.
How often does a Pontiac Grand Prix transmission need to be replaced?
The overall lifespan of a Pontiac Grand Prix transmission largely depends on how well it was maintained. Factory design flaws also factor into this equation, along with how/how hard you drive. But on average, we’ve seen the Pontiac Grand Prix transmission last for between 130,000-180,000 miles. A high quality replacement transmission however, can last considerably longer if all of the factory design flaws have been addressed and the vehicle has been maintained.
How are Pontiac Grand Prix transmission issues diagnosed?
It is fairly easy to guesstimate what the root cause of your Pontiac Grand Prix transmission problems might be, but you won’t truly know unless you have the right tools and experience. A good mechanic or transmission repair center will be able to connect your truck to a computer and find out which diagnostic trouble codes (DTC’s) have been stored. Once they know what to look for, they can perform a visual inspection to verify the problem.
How is a Pontiac Grand Prix transmission replaced?
In order to replace your Pontiac Grand Prix transmission, the truck has to be lifted from the ground in order to gain access to all of the parts that will need to be unbolted. Then the transmission can be lowered to the ground (typically with a transmission jack), so the new transmission can be installed. Once it is in place, for the 6L80, the vehicle PCM will have to be reprogrammed / reflashed to accept the new transmission using the latest GM subscription.
Recommendations for Pontiac Grand Prix transmission issues?
To save time and get back on the road faster, have your 17-digit truck VIN# handy and you can get an online quote for a reman Pontiac Grand Prix transmission here, then find a local shop using our Find a Shop guide to install it for you.
How to Solve Pontiac Grand Prix Transmission Problems
Solution A: Buy a Used Pontiac Grand Prix Transmission
The quickest way to fix your transmission problems is to simply buy a used transmission or used transmission. These can be found at most junk yards, and they often come with a 30-90 day warranty. However, there’s no way to determine the actual condition of the internal components, so you could be spending a bunch of money to have the exact same problems. Plus, that warranty only covers the transmission if it’s defective, not the labor costs that you’ll have to pay.
Solution B: Buy a Rebuilt Pontiac Grand Prix Transmission
Another option would be a rebuilt transmission or rebuilt transmission. A local repair shop will remove your transmission, then install a bunch of new parts during the rebuild. The problem here is, the skills and experience of each transmission rebuilder will vary widely from shop to shop, so you could have problems from something that wasn’t adjusted properly. And the 1-2 year warranty might only cover you at certain transmission repair shops, in a specific geographical area.
Solution C: Buy a Remanufactured Pontiac Grand Prix Transmission
Many owners depend on their vehicle to commute and get things done. Their gasoline engines are designed to go 100’s of thousands of miles, so it makes sense to invest in a remanufactured transmission.
What Transmission Do I Have?
What Problem Does Your Pontiac Grand Prix Have?
Let us know the year, mileage and problem you’re having as well as any trouble (OBD) codes you’ve found. If you’ve been given a quote or paid for a repair, we’d like to hear about that too!
Car will shift and move when the tranny is cold.once it warms up you can shift it but wont move.would this have to do with a temp sensor.and you can also hear it whining.ive syphoned most of the fluid out and put in new fluid to proper level but it still make the whining noise when its cold
Car doesn’t will move when first started up. Then after running a while it starts to feel like it is slipping and then doesn’t move in any gear. Can shut the car off then right back on and it will move and then eventually goes back to not moving
After turning on the engine I have a beeping noise in a car five long too short to short to short after 5 seconds too short and transmission stopped working so I have a 5 seconds to drive a car there’s some noise from the power converter. To be able to drive I have to reset the computer and I have exactly the same symptoms transmission after driving about the 5 seconds is not responding.
As I’m excelerating I have a high pitched whining noise and the if hit the throttle almost all the way it makes a grinding noise, has full fluid and no metal flakes on the stick in hoping it’s just a converter not sure
can a 2002 pontiac grand prix 3.1 se- transmission be safely flushed+everyone i hear says it causes shifting problems. also h
about how much$ average.
2003 Pontiac Grand prix
Hi; I have a 08 Grand Prix with 200k miles on it and the trans has started to slip. Other than that a good running car..
GXP – V8 – 5.3L 5328cc 325ci GAS MFI vin C type LS4 – 2 valve OHV had the tranny rebuilt. No 1st or 4th gear. Would that be a valve body problem
At first you could be driving and everything be fine then all of a sudden it would start slipping and then be fine and drive great for a few days. It got to where it would feel like it was slipping when I would take off at first. Then I was in reverse and I was backing out and I stopped to listen to someone and then gave it alil gas pretty quick it back up slightly and then stalled and will not connect to the transmission it fills like. Its going into what gear I put it in yes but it’s not connecting in to any gear. Like you can put it in drive and it will just be that if you give it gas it just sits there if u put it in reverse it just sits there. Other then that it starts and sounds fine. Could it just need to be flushed and new transmission fluid put into it and a filter?? Could it be something like the solenoid?
Sometimes when I back out and put in drive and hit the gas to go it feels like the transmission is slipping but if I let off gas and wait a sec it will catch and go. I notice that this mainly happens when I have been driving for awhile and have to hey back in and go again before the car cools off. I watch the transmission temp it normally sets at 206 degrees but here lately it’s been setting at 213 even got to 221 go I was hoping the fluid was thin a wore out and I could just service the fluid. Any advice is appreciated.
Won’t shift past 45
I have a 2005 grand prix 3.8 liter no turbo.was like it was stuck in limp mode. couldnt go past 30. Going up hill would lose power. Changed cam shaft sensor torque converter clutch solonoid. Changed MAP sensor throttle body and sensor. Still dont want to change gear.246000 miles
Shifter goes thru gears car selection doesn’t move
Does the 2007 grand prix v8 gxp 2nd gear on tyranny shift a little hard do to a performance
2005 Pontiac Grand Prix 150000 km on it sometimes when you stop at a light and then accelerate there is a hard shift into first gear almost as if it hesitates and then just clunks into gear some sputtering when accelerating throwing no codes
2005 grand prix gt..150.000 klm…not all the time but eccelerating of a light there is hesitation and a hard clunk into first gear
jai un grand prix 2007 avec 3.8 dedans comme moteur entre 60 et 80 kilometre heure elle donne des secousses quand jaccellere sinon elle va bien jaimerais savoir le probleme merci
2004 grand prix
2004 grand prix Had the lower cooler line was leaking so I had it replaced and couple weeks later when come to a complete stop it would take a minute to catch up and then it changes out just fine….I could put it in 1-2 or 3 and it would take off just fine….and had code PO742 pop up when I had it scanned
My 2006 Pontiac Grand Prix3.8 L started slipping when going to gear and then wont go over 40 miles per hour is really harsh between first and second and then barely goes into 3rd at high RPM. P0503 is code that’s showing.I have already replaced the speed sensor because the speedometer also isn’t working but that didn’t work.
Maybe not transmission?! It kinda jerks when I’m slowly accelerating stops when I hit gas or let off the gas completely, my rpms bounce when it does it also. I took it in thought maybe it had something to do with fuel he said it may be my transmission but was unsure as I have no codes or dummy lights on whatsoever. Was just doing it a little bit but has gotten tad worse over time. Any suggestions?! 2008 as basic as basic gets 140,000 started at around 110,000. (I drive a lot, about 30,000/yr).
I had the same problem. I changed fluid and filter and it fixed the hard shifting but before I did that my trans temp went WAY up one day and I lost reverse. Changed fluid and filter fixed the hard shifting issue though. Just keep an eye on your trans fluid temps.