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  1. Chevy C/K Truck Forum
    Hi I have a 1998 k2500 Cheyenne with about 305000 miles. It have the 5.7L v8. The issue I am having is that the truck has low oil pressure and idle at a stop. The pressure and idle is fine when you first start the truck but as you go you can the oil pressure drop. It usally drops to around 20...
  2. Chevy Suburban Forum (GMC Yukon XL)
    I have a 1998 Chevrolet Suburban 5.7 vortec engine at 299000 miles. Yesterday I accidentally put in 93 gas instead of the recommended 87( not sure if this fact is related to the problem). The very next day, it suddenly cut off while driving down the hwy. I pulled over to try and restart it, it...
  3. Chevy Suburban Forum (GMC Yukon XL)
    1998 suburban with a 5.7 having trouble shifting up, it just revs up but never shifts, backfires occurring often when revving up too. If anyone knows what could be the most likely cause I'd really appreciate the help.
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