OBD-I Codes List

GM 69 A/C Clutch Relay Circuit Open Indicated

Make
GM (1982-1995)
Category
Powertrain - Computer and Auxiliary Controls
Severity
Check Engine Light

How to read it

Code 69 reads as 6 flashes, pause, 9 flashes on the check-engine light. Jump terminals A and B on the ALDL connector with the key off, then turn the key on with the engine off and count the check-engine flashes.

New to flash codes? The How to Read GM OBD-I Codes with a Paperclip walks through the test and what the numbers mean. The general OBD-I guide covers the rest.

What does GM code 69 mean?

A/C Clutch Relay Circuit Open Indicated

Common causes of 69

  • Failed A/C clutch relay
  • Open wire between ECM and relay
  • Unplugged clutch connector
  • Blown A/C fuse

How to fix 69

  1. Read codes with a paperclip jumper
  2. Check the A/C fuse first
  3. Swap the relay with an identical one and retest
  4. Check for battery voltage at the relay socket
  5. Trace the open wire back to the ECM
  6. Replace the relay or repair wiring then verify engagement

Source

Qualified source review

Sources and review

Review: qualified. Read the source limits below.

  • GM and Chevrolet OBD1 Trouble Codes (ALDL Fault Code List)

    live reference page (troublecodes.net)

    Supports: code identity and GM meaning

    Fetched directly. Single publisher, so the record is qualified, not verified. Causes and check order are curator-written from the circuit the code names.

    https://www.troublecodes.net/gm/

Last updated 2026-09-19.

Report a correction for 69. Include your vehicle, the issue and a source if you have one.

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