Q: Backfire - 1993 GMC C2500 Suburban

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truck was backfiring. New cap and wires. Now wont start at all. Double checked wire order but still no luck.

My car has 150000 miles.
My car has an automatic transmission.

Hello, thanks for writing in. The engine should be checked to make sure it has spark from the coil. If not, then check the coil for a signal from the ignition module and replace the ignition module and coil. If you need a diagnostic, a certified professional from YourMechanic can come to your car’s location to diagnose the backfiring issue and perform the appropriate repairs.

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