Question about 1996 Chevrolet Impala SS
Powertrain control module. It does exactly what it implies, controls the engine and transmission. Some Manufacturers have a split system which starts the vehicle and then transfers the operations to a different computer after a fixed number of seconds.
Using a split system usually shows up when the engine starts and runs perfectly for 5 to 10 seconds and then dies. The transfer to the second computer is not occuring when they do this.
Posted on Feb 18, 2012
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Posted on Jan 02, 2017
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REMOVAL & INSTALLATION See Figures 1, 2, 3, 4, 5, 6, 7 and 8
Fig. Fig. 1: The PCM is mounted behind the fender, adjacent to the EVAP canister
Fig. Fig. 2: Remove the module-to-bracket retaining screws and ...
Fig. Fig. 3: ... remove the PCM (1) from the mounting bracket (2)
Fig. Fig. 7: Remove the EPROM cover, if the seal tears, this is normal, do not apply an adhesive to the pad, the adhesive could drip onto the circuitry and ruin the PCM
Fig. Fig. 8: Remove the EPROM by squeezing the two tabs and carefully separating the EPROM from the PCM
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