I did a tune up in the spring, all AC Delco parts. Today I checked the #8 plug and wire, both were fine. The first dealer wanted $130 to check it out and if I got it repaired the $130 would not be counted toward the repair! I drove 2 miles down the road to King Pontiac, the real nice folks for a dealership, service guy took it right in an had it looked at, all the ignition parts checked out fine, pressure check was good also. I'm told that the CPU that controls the injectors is the culprit and GM has an updated CPU and its $700. I was told that the intake must come off to install the new part! They did give me a free rental!
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