MEMCAL
This is the exact OEM manual section for the path above. Use the breadcrumb to move up or down the tree until you reach the precise year, make, model, and subsystem you need.
Need a step-by-step guide?
Get an AI-powered repair guide with parts lists, cost estimates, and clear instructions for your 1982 Chevrolet.
Revenue RailIntent: manual
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
More supporting gear
Torque wrench
Use the factory procedure with the right tightening tool.
Manual-based work becomes much easier when you can torque correctly.
Shop on Amazon →Trim tool set
Useful for clips, covers, and trim pieces called out by the manual.
Most manual procedures assume you have a good trim removal kit.
Shop on Amazon →Multimeter kit
Great for electrical troubleshooting and manual-tested circuits.
Electrical work in manuals often needs a meter more than another wrench.
Shop on Amazon →CONDITION:
When installing a service replacement computer, the use of incorrect MEMCAL installation procedures may cause the computer to fail before it can be installed in the vehicle. This condition may appear as if the computer were defective when shipped to the dealership, when in fact it was damaged while being installed. In addition this condition may also occur when installing an updated MEMCAL into the vehicles original equipment computer.
CAUSE:
Excessive vertical force may be applied to the MEMCAL resulting in flexing of the circuit board and damage to the connections between the circuit board and attached components. Excessive vertical force may be generated in two ways.
^ Incorrect MEMCAL installation procedures.
^ Interference between MEMCAL and cover.
IMPORTANT CORRECTION:
This procedure supersedes any instructions regarding MEMCAL installation dated prior to September 1990.
1. Inspect the MEMCAL to determine if a cork spacer is glued to the top side of the MEMCAL assembly. If so, remove it prior to installation.
2. Align small notches with matching notches in Computer MEMCAL socket.
3. VERY GENTLY PRESS down on the ends of the MEMCAL until the locking levers are rotated toward the sides of the MEMCAL.
NOTE: To avoid Computer damage, do not press on the ends of the MEMCAL until the levers snap into place. Do not use any vertical force beyond the minimum required to engage the MEMCAL into its socket.
4. While continuing light pressure on the ends of the MEMCAL, use your index fingers to press the locking levers inward until they are snapped into place. Listen for the click.
5. Install MEMCAL cover and install Computer cover.