Q: Won't Shift into drive, 2008 Pontiac G8

asked by on

My car is having shifting problems, and it won’t go anywhere when I put it in Drive. But it goes into Reverse just fine. I checked my transmission level and it's good. I was thinking maybe it’s one of the sensors. But I've never had a problem with the transmission. I change the radiator fluid all the time. I put 2 new quarts of transmission fluid in my car, and was able to drive in Reverse fine and even in Drive. I put it in Park for 2 weeks, and it sat around. Then when I tried driving it again and put it into Drive it wouldn't go anywhere, but it went into Reverse just fine. I don't understand this. Do you have any thoughts or ideas?

Unfortunately, it sounds like you have an internal transmission problem that will require the transmission be rebuilt or replaced. A transmission that won’t go into any forward gear almost always indicates an internal mechanical problem as opposed to an electrical problem, like a sensor. I’m not sure if you have the 6L80E or 5L40E transmission, but my guess is that the problem is probably in the 1-2-3-4 clutch assembly. I suggest you have a professional, such as one from YourMechanic, diagnose the shifting issue firsthand, and advise you on the next steps.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Won't Shift into drive, 2008 Pontiac G8

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Engine rattles when I I turn on my engine for the first time in the morning. It seems like it only does it when it's cold

Hello. Most likely, the noise you describe is coming from one or both of the camshaft phasers on your engine. These devices which are operated by engine oil pressure, vary camshaft timing (relative to the crankshaft), enhancing engine performance and...

Q: After serpentine belt slipped off transmission won't go into reverse

It may be possible that the belt struck and bent a shifter linkage component. I suggest having a certified technician diagnose your gear slipping issue, including an inspection of the shifter linkage for proper adjustment or damage.

Q: Malfunction indictor lamp comes on and car won't move

A few different things have the potential to cause the transmission faults you have described. The most common would be a transmission position sensor/range switch, neutral safety switch, shift solenoid, low fluid level, or the transmission itself. I'd recommend getting...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...