Cadillac Repair Questions? Ask a Mechanic for Answers ASAP
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Do you have any test equipment?
Things you should have before we proceed:
1. Spark tester
2. Scan tool with data
3. Fuel pressure gauge
4. Injector noid light set
There are numerous parts that could be causing your concern. I would need to have you do some component testing to determine what has failed.
How would you like to proceed?