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About Todd Puccio
Expertise
General auto repair,electical issues,driveability issues,anti-lock brakes,SIR systems,HVAC,engine performance,Gm spacific. I have worked at my current dealseship since the 1990 model year anything much older than that I have limited exposure to. I do not have very much transmission experience so those question you may want to ask of another expert. When you send me a question let me know the exact make/model/engine and year for the car or suv you have it makes it easier to answer the questions that way.

Experience
Experience in the area:I have been employed by the same Gm dealer for 18 years and and a ASE master technician. I work at a Pontiac and GMC truck store. Served a a lead technician when dealership was on a team system. I just recently moved to a Buick,Hummer,Saab Store when my franschise was purchased by this dealership. Organazations: ASE master techncian Education/Credentials:High school diploma,2 year vocational school degree 2 year college degree. Associates degree in applied scineces (auto technology)Awards and Honors: GMC master techncian

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Pontiac Repair - 1997 pontiasc trans sport trans problem

Expert: Todd Puccio - 11/14/2009

Question
1997 trans sport code 0740,0753 and 0758 come up when i scanned after changing tranny twice. all three trans had same symptoms. 2and 3 gear only. no OD and no Cruise. first trans was original and had 168000 miles. i replaced it and this one worked for a week and then developed same symptoms. i pulled that one and replaced with a third which had immediately showed the same symptoms. could not get codes from PCM until after the third trans. i am at a loss. what do you think????

Answer
Hey Tom:

Those codes are all transmission solenoid codes. Either you have a bad ignition switch blown fuse or wiring issue between the transission and the engine control module. It could also be a bad engine control module or even a bad groundfor the engine control module. I can't give you a exact answer with out seeing this but the issue have is an electrical failure not a trasmission mechanical failure. You could have a bad connection going into the transission at the plug. basically in a nut shell the engine control module doesn't like what it is seeing on the solenoid control circuits. some things to check are obviously the ground wires on the transmission to engine studs taht hey rae clean and not corroded or that you didn't forget to hook one up. take a look at the engine harness comming out from the air cleaner box to the transmission the engine control module is in the bottom of the box and the harness runs from there down the the trasnmission make sure the harness is not rubbed through anywhere near the radiator possably at the top or on one of the "dog bone" engine mounts near the radiator.. those are places to look. take a look at the transmission plug unplug it and see it you can visabbly see a terminal that may be spread open or corroded or even posssbaly pushed though the back of the connctor.. Good luck :)

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