Issues with your PCM??
Safety Car
Joined: Mar 2005
Posts: 4,465
Likes: 1,223
From: Fredonia WI
2025 Corvette of the Year Finalist - Unmodified
2024 C7 of the Year Winner - Unmodified
2023 C4 of the Year Finalist- Modified
2020 C4 of the Year Finalist - Modified
2019 C4 of Year Finalist (performance mods)
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Race Director
Joined: Oct 2008
Posts: 17,982
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From: Lansing MI
I learned some things from this thread. Thanks to the OP for sharing.
Someone mentioned "VSS Buffer". While the VSS buffer was a common component in many GM vehicles in the late 80's and 90's (particularly trucks), the C4 never used one. The 84-89 has the VSS buffer contained within the cluster. The 90-96 is contained within the PCM.
Glad the OP got his car fixed.
Someone mentioned "VSS Buffer". While the VSS buffer was a common component in many GM vehicles in the late 80's and 90's (particularly trucks), the C4 never used one. The 84-89 has the VSS buffer contained within the cluster. The 90-96 is contained within the PCM.
Glad the OP got his car fixed.
