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Cadillac Repair/trans shifts hard and late


I have a 1991 cad rear wheel dr brhmn 307 and suddenly it started shifting hard-slamming into gear after going past regular shift point- bought a shift solenoid but nothing like it on my tranny. need location-pic would help where its located and pic of part! or info on what is cause of this prob-car has 170000 miles and ive had 4 of these and always reached 200k with no tranny probs. Thanks in advance on any help u can give me!


It has been over 15 years since I worked on one of these for a shifting issue however I remember a very common situation which was the adjudtment of the shift cable at the throttle body under the hood.
The best tool for diagnoses and repair of the transmission and any future problem without changing parts on a guess and wasting valuable time and money.
Try to purchase a cadillac rwd brougham service manual from craigslist or Ebay. The diagnostic flow charts are excellent for finding any problem in the vehicle as well as the location of specific components.
This enables a person to get the right disgnoses every time.
The manual is what us oldtimers used at the dealer.

Good luck!


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Rob Painter


Alarm system questions cannot be answered on this forum. These systems are not what I can answer. Without being physically at the vehicle and not knowing what kind of electrical service has been done on the vehicle, there is no possible way to give an accurate answer over the internet. My expertise is in Ignition/key based anti-theft systems. These issues include GM VATS (resistor chip in key blade) PASSLOCK (MRD)-ignition lock rotation based, no special ignition key and the PKIII Transponder (computer chip in key) systems. These systems are not alarm based and are integral with the starting of the engine. This is why I cannot diagnose alarm problems without physically looking at the vehicle: Alarm systems are a completely different annimal than ignition key/lock based anti-theft system. Many alarm questions come from vehicles 10 years old, and since older, many hands that had been involved over the years.I am an expert in all GM factory (ignition/key based)systems. Alarm system questions pose to many situations beyond my knowledge as to what has been done to the vehicle over the years. Some guy may have actually wired the stereo into the alarm system. Who knows? Over my past 30 years in vehicle wiring repair, I have seen unbelievable wiring disaters done by guys that consider themselves "mechanics." I have seen stereos and alarms intalled using surgical tape. I have seen modules burn up, un-fused circuits, wiring jambed between the doors and even lamp cord used for a starter kill. To answer alarm questions over the internet without examining the vehicle is like asking; What does it take to remove a dent?


Education/Credentials-ASE certified. 11 years with a GM dealer and 17 years with a repair facility dealing with only the repair of theft recovered vehicles.

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