Question about GMC 2003 Envoy XL SLT

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Why does it cut back when i try to accelerate

Its also hard to start

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Try to take to your friendly Auto parts store, they may read the ECU error codes for you, which is the first thing I would do. I have found that corrosion on Sensor connections do funny things to the fuel delivery system (ECU). Yesterday I had knock sensor error. Had a devil of a time to remove the connector, but once off I cleaned with electronic contact spray, a toothpick and scraped spade connectors with a blade to bright metal. Cleared code and wala, Fixed. 20 yr old car. Salt areas are probably a lot worse.

Posted on Apr 04, 2015

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Posted on Jan 02, 2017

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