6000 V6-173 2.8L (1988)
3 .
Install a new MEM-CAL into the Engine Control Module (ECM) per
instructions below. The new MEM-CAL is available from GMSPO. See attached service part number chart. Install the identification
label package to the ECM access door and to the left shock tower per label kit, P/N 10154725 instructions.
IMPORTANT:
The new MEM-CAL to be installed does not need or use the existing MAF signal; however, it does need and use the
MAT signal.
A).
Pull the underhood ECM continuous power fuse or disconnect
the battery and leave it disconnected for at least 10 minutes.
B).
Remove MAF relay, if applicable, and discard. Tape up
connector to prevent water intrusion.
C).
Remove current MEM-CAL and install a new service MEM-CAL.
Clean throttle body I.D. bore in the area behind the throttle plate. Use a shop towel with GM Top Engine Cleaner, P/N 1052626,
or AC-Delco Carburetor Tune-Up Conditioner, P/N X66-A, or equivalent not containing Methyl Ethyl Ketone.
D).
Restore the battery power and place air conditioning
controls (if equipped) in the "off" position.
E).
Firmly apply the parking brake and block the drive wheels.
Start the engine, and shift the transaxle to "drive" for automatics or "neutral" for manuals.
F).
Allow the engine to run until the engine cooling fan has
cycled once, or a maximum of 10 minutes.
G).
Turn the ignition key to the "off" position for at least 5
seconds.
H).
Start the engine, and shift the transaxle to "drive" for
automatics or "neutral" for manuals.
