NEED HELP P0797 code Silverado 2010 Vortec 5.3 l transmission noise 6l80

Mramses

Original poster
Member
Jul 19, 2020
322
17176352
chevrolet silverado double cab truck 5.3 l engine and 6l80 transmission problem: noise in transmission. presents code p0797 The entire 6l80 transmission was recently repaired. Could you help me with the diagnostic letter or bulletin for this code p0797? Could you help me obtain the repair manual for the 6l80 transmission, which describes the procedure for diagnosing the transmission codes. note: The transmission shifts normally. Thanks to all my friends
 

Mooseman

Moderator
Dec 4, 2011
25,487
Ottawa, ON
Did a little searching and did find this here:

The 6L80E transmission does not have individual solenoids. It uses a TEHCM’s, that has all the solenoids and rom chip made altogether. Here is a link so you can see what it looks like, https://streetsmarttransmission.com...5emmtmwtPc1bV0g98VASwHeenOZrYcIxoCkoIQAvD_BwE . It bolts to the bottom of the valve body inside the trans pan. It has to be programed before the trans will work correctly once installed.

Was the whole transmission or TEHCM replaced? If so, the VIN has to be programmed into it, which requires a dealer level tool like a Tech 2 or MDI. If you still have the original TEHCM, you can swap it out if it's still good.

This video sorta shows how the programming is done:

 
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Mramses

Original poster
Member
Jul 19, 2020
322
17176352
Good morning friend, thanks for responding. Could you help me locate the workshop manual for the 6l80 transmission? Make it complete, I mean the procedures to correct codes and repair please greetings
 

Mooseman

Moderator
Dec 4, 2011
25,487
Ottawa, ON
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