700r4 vs 4L60E

The 700R4 and 4L60E transmission are not siblings.  It is better to think of them as the continuation of the same design.  From the early eighties until quite recently it has been in service in GM passenger vehicles and light trucks.  Throughout that whole period, they have constantly improved. When the 4L60E made it into … Read more

4T65E Problems

The 4T65E is for the most part a fairly reliable transmission.  It is the successor to the 4T60E.  Variations of this transmission have been common since the 1980’s.  By the 2000’s most of the kinks were worked out.  But, like everything else, it’ll break and wear out with mileage and time.  So without further fanfare, … Read more

CV Joint Noise + Symptoms

What does a CV joint do anyway?  A CV joint (short for Constant-Velocity joint) transfers power to the wheels exactly like a drive shaft would on a rear wheel drive car.  The rub with a CV joint is that it has to transfer power at MULTIPLE ANGLES. There are two CV joints per axle.  They … Read more

PO700 Code

The PO700 trouble code is a code thrown out by an automatic transmission whenever it detects that there is trouble.  It is a general code.  This means that it should be accompanied by some other code that should tell you the specific problem.  PO700 is and OBDII code and not just GM. If you are … Read more

Automatic Transmission Won’t Go in Gear- Troubleshooting

Nothing is worse than sitting in a vehicle that won’t go anywhere.  It’s even worse when the engine is running , but the vehicle won’t move.  We’ll assume that you’ve found yourself in a situation where your automatic transmission car won’t go into gear, and need help right away. Let’s get straight to it.  We’ll … Read more

How do you know when your transmission is going out?

There comes a time in the life of any mechanical device, no matter how well maintained, that it’s going to go out.  Transmissions are certainly no exception. They are full of complex parts that just wear out eventually.  Knowing when your transmission may be going out is a great way to keep from getting stranded … Read more

Torque Wrench Buying Guide: How to Pick the Best

Any time that you undertake a serious automotive project, there is almost always a need for a torque wrench, espescially if you are going to rebuild the engine or transmission. Over tightening is just as bad as under tightening a bolt in many cases, espescially if you are re-assembling a motor.  Hopefully if you find … Read more

4L60E VS 4L80E Differences   

There are many differences and a few similarities between the 4L60E and the 4L80E transmissions.  If you don’t feel like reading a whole article on it the main differences between the two transmissions come down to two things; their actual physical size (the 4L80E is bigger) and the amount of horsepower that they can handle … Read more