obd1 code 67

gaftop1 · 11-07-2009, 06:30 AM

94 c1500 4.3 4l60e. have had a code 67 since i bought this truck (2 months)my book says it has something to do with the torque converter and another code list says it's low freon. recharged a/c, reset computer and 67 is back. which code is right and if it's the tc what can i do about it?

leolkfrm · 11-07-2009, 07:02 AM

67

Torque Converter Clutch (TCC) Solenoid Circuit Fault

here is a helpful list

Troublcodes.net Trouble Codes OBD & OBD2 Trouble Codes and Technical info & Tool Store. By BAT Auto Technical

gaftop1 · 11-07-2009, 12:48 PM

ok now, how do i fix it? trans is shifting fine.

Case 7230 · 11-07-2009, 01:42 PM

Good info from Leo. The converter clutch locks and unlocks the two parts of the converter so you may not notice any shifting problem, in fact, you may not notice any difference at all if the clutch is not locking up. However you may get reduced MPG and the trans may run hotter.
Ont thing you could do is clean the electrical plug connectors to the trans. just in case there is a bad connection.
If that doesn`t do anything your best bet is get it put on a scanner to try to pinpoint the problem.
Just my thoughts.

leolkfrm · 11-07-2009, 02:52 PM

someone must help me verify, did the 4.3 have the tc switch in the dizzy like the 7.4? if so it may be the problem

1500cheyenne96 · 11-07-2009, 03:00 PM

No i don't think it did if it's E tranny all the controls are in the trans i think heres a wiring diagram

crabtruck · 11-09-2009, 05:38 AM

TCC internal. 67 will set for failure to engage or disengage, same code. Will reset by itself when fault gone. Don't think 94 had any codes for AC, careful what lists you read. 67 will block TCC engage and in hot mode will block 4th. Either the solenoid is bad or the feedback is fail. Pulling the plug on tranny will set other codes, at least if key goes on. Check connections for speed sensors while there.

11-07-2009, 06:30 AM	#1
gaftop1 Full Member Join Date: Oct 2009 Posts: 14	obd1 code 67 94 c1500 4.3 4l60e. have had a code 67 since i bought this truck (2 months)my book says it has something to do with the torque converter and another code list says it's low freon. recharged a/c, reset computer and 67 is back. which code is right and if it's the tc what can i do about it?

11-07-2009, 07:02 AM	#2
leolkfrm Senior Member Join Date: Mar 2008 Location: N.Y. Posts: 4,298	67 Torque Converter Clutch (TCC) Solenoid Circuit Fault here is a helpful list Troublcodes.net Trouble Codes OBD & OBD2 Trouble Codes and Technical info & Tool Store. By BAT Auto Technical __________________ 4 wheels move the body 2 wheels move the soul B.W.A.I

11-07-2009, 02:52 PM	#5
leolkfrm Senior Member Join Date: Mar 2008 Location: N.Y. Posts: 4,298	someone must help me verify, did the 4.3 have the tc switch in the dizzy like the 7.4? if so it may be the problem __________________ 4 wheels move the body 2 wheels move the soul B.W.A.I

11-07-2009, 03:00 PM	#6
1500cheyenne96 Senior Member Join Date: Sep 2009 Location: MIchigan Posts: 195	No i don't think it did if it's E tranny all the controls are in the trans i think heres a wiring diagram Attached Thumbnails

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11-07-2009, 12:48 PM	#3
gaftop1 Full Member Join Date: Oct 2009 Posts: 14	ok now, how do i fix it? trans is shifting fine.

11-07-2009, 01:42 PM	#4
Case 7230 Senior Member Join Date: Dec 2007 Posts: 547	Good info from Leo. The converter clutch locks and unlocks the two parts of the converter so you may not notice any shifting problem, in fact, you may not notice any difference at all if the clutch is not locking up. However you may get reduced MPG and the trans may run hotter. Ont thing you could do is clean the electrical plug connectors to the trans. just in case there is a bad connection. If that doesn`t do anything your best bet is get it put on a scanner to try to pinpoint the problem. Just my thoughts.

11-09-2009, 05:38 AM	#7
crabtruck Senior Member Join Date: Jul 2007 Location: on your 9 Posts: 3,349	TCC internal. 67 will set for failure to engage or disengage, same code. Will reset by itself when fault gone. Don't think 94 had any codes for AC, careful what lists you read. 67 will block TCC engage and in hot mode will block 4th. Either the solenoid is bad or the feedback is fail. Pulling the plug on tranny will set other codes, at least if key goes on. Check connections for speed sensors while there.

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