Pontiac Transport Shifting Problems And Code P0753

Question:
1998 Pontiac Trans Sport.
Changed the transmission fluid filter several years ago. Added Lucas transmission treatment.
Question: The transmission sometimes comes out of gear while stopped at a traffic light or stop sign. It is very random. It may not happen for several days or weeks and sometimes it can happen twice in one day.

When the problem occurs, it sometimes takes a minute or two of shifting back and forth from Drive to Park to Drive before it starts going again. The transmission never slips or comes out of gear while the van is moving. It only seems to occur after the van stops at a stop sign or traffic light.

Answer:
First, be sure to check fluid level and condition. There is nothing external or electrical that can cause this. May have a problem in the forward clutch, forward band apply, or a rolled seal.In any of these cases, removal and disassembly would be needed. May be time for an overhaul. You could try to have a transmission flush service done and see if it helps.

pontiac transport

Question:
2003 Pontiac Grand Prix Check Engine Light, transmission codes P0753.
Question = I have a 2003 Pontiac Grand Prix with 84,000 miles on it. My Service Engine Soon light just came on about a month ago and when it did my cruise control stopped working at the same time.

I can feel it has trouble shifting and I have hooked it up to a machine that AutoZone has to check my problem and it says its a transmission module code (P0753). We have asked others who say that it probably isn't the problem because they have never heard of one of those going out and it's probably a wiring issue. Can you tell me what you think it might be?

Answer:
This codes refers to the 1-2 shift solenoid. Be sure to check all fuses first. Specifically the fuses in the underhood fuse block. If that is ok, then there are two possible causes for the problem. It is probably NOT the transmission control module gone bad.

Either you have a connector problem at the 20-way transmission case connector causing this code, or the solenoid. The solenoid is on the valve body in the side case of the trans. Suggest disconnecting transmission connector with key off, look at all terminal, pull the harness a little so as to change its position, then plug it back in. Clear the codes and drive it to see if it is repaired.

Question:
I know the codes p0753 p0740 what should I expect to pay to get the van fixed? Can I drive it? What will happen if I did? Please advise! 1997 pontiac Transport SE 3.4 v6 3400. Dash lights computer codes = p0740 p0753.

Answer:
If you are thinking that you need to replace the 1-2 shift solenoid, and the TCC solenoid, the parts are approx. $175 with gaskets and fluid. It is quite labor intensive. The entire driver side frame need to be lowered to remove the side cover. Expect to pay 5-6 hours labor.

Driving with these codes, and the probable shifting problems for an extended period of time can start to cause other internal trans. Problems. Note: There is a service bulletin describing these codes that may be an electrical problem not in the trans, and not the solenoids.


Get Our E-Book Filled With Great Information


Q and A Main


How Things Work


Electrical