← Back to list

95 Chevrolet C1500 OBD II 2-Digit Fault Codes Explained: 3-2, 5-9, 6-6, 6-7, 7-4, 8-1, 8-2

Model: 95 chevrolet c1500 Fault Code: P2177 Posted: 2015-09-02 18:44

I own a 1995 Chevrolet C1500 and, without an OBD-II scan tool, I used the jumper wire method to read the 2-digit fault codes by counting flashes. The codes I retrieved are: 3-2, 5-9, 6-6, 6-7, 7-3, 8-1, and 8-2. While I can interpret some of these codes (e.g., 3-2 for EGR system), I'm unable to find reliable explanations for the transmission-related codes from 6-7 through 8-2. Could anyone clarify what these specific codes mean? Additionally, knowing my transmission model—4L60E or 4L80E—and the 8th character of my VIN would be helpful in identifying accurate interpretations.

Related fault codes
P2177
Comments (5)
Anonymous 2015-09-03 12:51

The code 3-2 corresponds to an EGR system fault. The remaining codes (5-9, 6-6, 6-7, 7-3, 8-1, 8-2) are related to the transmission system. To provide accurate interpretations, it's important to know whether you have a 4L60E or 4L80E transmission—this information can be found in your vehicle’s VIN, specifically the 8th character.

Anonymous 2015-09-13 18:18

I have a 4L60E transmission. This helps narrow down which transmission-specific codes apply to my vehicle.

Anonymous 2015-09-13 18:22

The 8th character of my VIN is 'Z', which indicates a specific production variant and may influence the interpretation of certain fault codes.

Anonymous 2015-09-14 10:48

Here are known meanings for these transmission-related codes: 5-9 = transmission fluid sensor circuit low; 6-6 = 3/2 control solenoid circuit fault; 6-7 = TCC (Torque Converter Clutch) circuit fault; 7-3 = pressure control solenoid circuit fault; 8-1 = 2/3 solenoid circuit fault. The recurring keyword is 'circuit'—this suggests potential wiring or power issues. Please verify that the transmission receives proper 12V power and check all connectors for corrosion or loose connections.

Anonymous 2015-09-14 11:37

Also consider checking your private messages (PM) section for further technical support from other users with similar setups.