Z6 No communication codes????
Thread Starter
1st Gear
Joined: Oct 2021
Posts: 1
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Z6 No communication codes????
I have a 2010 Vette in my shop. I have painted entire car which was running when it came into shop and now it won’t start but turns over good. I found the burnt 20 fuse to fuel pump and figured this was my problem. Car was low on fuel So we topped it off but after fuse replacement and a full tank still no luck. Replaced the battery with a new one and checked relays and grounds as well but still no luck. Put a gen 2 on it and says no communication on several codes? Can’t hear fuel pump prime when I start but I believe this model has two pumps from what dealer told me and didn’t figure I lost both at same time ?Any help would be appriecated
Race Director
Joined: Dec 2013
Posts: 12,504
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Pull the fuel pump relay, and jump it out to see if that will supply fuel pressure to the rail to at least get the engine running.
If you have pressure on the rail with relay jumped out, then you know that the problem is back up line between the ECM and the relay.
If you have pressure on the rail with relay jumped out, then you know that the problem is back up line between the ECM and the relay.
