Question about 2002 Chevrolet TrailBlazer
Picked up a free trailblazer with transmission problems for my daughter. When I first drove it it would not shift into 2nd and would not go over 20mph. My brother drop the pan, drained the fluid, replaced the seals, filter and put new fluid in. Now the car drives up to 65mph but it still has high RPM's (then let up off the gas) it shifts into 2nd...does same thing at 3rd gear but not as bad. There was a lot of shavings in the fluid, water and oil looked burnt. Filter was clogged. Any hope of doing anything else to maybe make this car shift better? Other than replacement. ALso, it drives in all gears, no thumping when put into park or drive or reverse. Thanks in advance.
He should have checked the codes first. before doing the work .as in the transmission pan is a pressure sensor, and a governor pressure sensor that sensor has an electrical connection on it.both are known to fail.try check the codes . but it can also be your linkage is needing adjustment.and your kick down cable needing adjustment .or sticking from rust and dirt.
Posted on Dec 21, 2013
Testimonial: "Thank you for the advice. I will need to go to a mechanic to get codes. My brother does not have the machine for codes. Yes, I know, ....Thank you"
Have a pressure test done on the transmission to check for internal problems. run fault codes to check for TCM and other related faults. Have a band and clutch pack adjustment done . If it all checks out but the problem persists then you may have to consider a removal and overhaul option.
Posted on Dec 21, 2013
SOURCE: 1993 Chevy Silverado 4x4 1500
If you have no overdrive at all, and virtually no third, then it's time for an overhaul. The 3-4 clutches have failed, a common problem in this trans since 1981. Yes, 1981. Your trans is a 4L60-E that is computer controlled. In 1981 it was called a THM700-R4, and was hydraulically controlled. The input clutch drum is basically the same as it was in 1981, and the 3-4 clutches are prone to failure, usually around 130,000 to 150,000 kms (75,000 to 90,000 miles).
Posted on Apr 18, 2011
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