4l60e doesn’t shift to 2nd gear

[Brisolle]

Hello all:

I have a 2004 Denali with 4l60e tranny with 183,400 original miles. Trying to decide whether to keep it or list it for parts on Craigslist. I’m getting error codes p0300 random/multiple cylinder misfire, p074p torque converter clutch open, p0785 shift/ timing solenoid and p2761torque converter clutch pressure control solenoid control circuit / open.

I’m in northwest N.J. car has some rust on it and trying to justify cost versus benefit. I don’t want to spend the quoted $2500 to $3500 for a rebuilt transmission. There are some adds on Craigslist for rebuilding tranny for $750 ish but I have to take uninstall and install myself. Price is affordable but I don’t know if I can trust Craigslist. If anyone knows a trusted affordable local shop pleas let me know.
I have decent bush mechanic skills and might attempt rebuilding it myself but time is the factor. It’s not my primary vehicle but I am attached to the damn truck. Help me decide. Appreciate any advice. Thanks

 

[swathdiver]

The repairs to the transmission would happen in the valve body area, no need to remove it from the truck unless the converter clutch is really broken. Look up rebuilding those solenoids on Sonnax's website and check Amazon for costs, probably less than $300.

 

[Brisolle]

The repairs to the transmission would happen in the valve body area, no need to remove it from the truck unless the converter clutch is really broken. Look up rebuilding those solenoids on Sonnax's website and check Amazon for costs, probably less than $300.

Thanks. On their site now.