Several things can cause this problem, cracked distributor cap, old ignition rotor. Or if you have coil packs, cracked coil pack, ignition control module, crank position sensor, cam position sensor. Coil pack parts and sensors can be checked by autozone, cap and rotor will have corrosion on the rotor, however a small crack in the distributor cap can be next to impossible to see, replacement is usually best option.
SOURCE: oxygen sensor
Hello gobabygo1, my name is JShreader. Thank you for choosing fixya.com.
There is 4 Oxygen Sensors on this model Truck. I uploaded a picture showing you exactly where each of the 4 Oxygen Sensors are located. It is in .pdf format. You can download it by clicking HERE. I hope this helps you. If you have any more questions or need any more diagrams, please don't hesitate to ask...Thanks again, JShreader!
SOURCE: I replaced fuel pump on 1997 gmc 1500 5.7 liter.
Check for a vacuum leak and replace your fuel filter.
SOURCE: 1998 gmc truck 5.7 liter, I need to know the
Should be located above break peddel next to steering colume under dash.
Testimonial: "I did go down an get a new brake light switch but it looks like the switch had moved out of the correct position, I adjusted it now it works. thanks "
SOURCE: 1996 gmc serria 1500 5.7L transmission made a loud
It sounds like you may have a broken drive drum or planetary gear set inside the transmision. I believe you have a 4L60E transmission in this vehicle and I've seen several failures similar to this which require the transmission to be removed and repaired. It's always worth a good look at everything on the outside first just to be sure but I think you probably have an internal mechanical failure of some type
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