Mister1500
Newbie
Hello, I am new and have been looking for a good source for info. Long story short my son fighting cancer just had his veh totaled by a deer, I loaned him my car so he can continue his treatments. I have pulled out my 1995 Silverado with 270,000 miles on it. It is not shifting. I have power to the connector at the trans, I have replaced the ignition switch, checked fuses and grounds I can find, I have replaced the PCM and the harness in the pan. I still have codes 66, 67, 81, and 83. Every once in a while if shifts perfect. Most times I have to start in 2nd and shift to 3rd. Any help is greatly appreciated. I am looking for thoughts. Thanks in advance! Newbie.