Jumps rpm's and struggles

2004 GMC SIERRA
89,000 MILES • 1.5L • V8 • 4WD • AUTOMATIC
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ROVIEZZY
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  • 3 POSTS
When i accelerate the rpm's jumps up between three and four and drops back down while i am only driving between twenty five to thirty mph. It also struggles while i am accelerating as if its switching gears on its own. Could it be a transmission problem?
Aug 2, 2016 at 5:34 PM
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HMAC300
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  • 48,601 POSTS
scan for codes and check fuel pressure with a gauge first auto parts rent it also clean throttle plate on both sides and iac hole with choke cleaner.
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
Aug 3, 2016 at 7:22 AM