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What is your question?
No codes, no security light, fuel pressure around 60psi, good battery. Acts like injectors cut off. Was running fine, just hard start when Warm. Went over a big bump, and when shut truck off to go into store, came out and wouldn't stay running. Tried wiggling harness = no fix. Dies and fuel pump still running for a second. Spray brake clean in throttle body and will run for as long as i pulse the spray correctly. Please..... any help appreciated. At a loss. Spider failure? How do i check for injector signal? I know it's a pain to access the spider so if that's it i would like to make sure before i start disassembly. Thank you in advance.
How long has your 1999 GMC C1500 Suburban had this problem?
2 days
2 Replies
Security system disables fuel injector pulse.. Is security light remaining on of flashing while cranking engine?
Also check ECM 1 fuse - under hood fuse box.... Injectors. https://www.autogenius.info/chevrolet-suburban-1999-fuse-box-diagram/ Good luck!