I have a '97 gmc seirra, 5.7 ltr. It has trouble shifting into 3rd gear and will not shift into 4th at all. When I say "has trouble" I mean I have to rev it up to around 5k rpms to make it shift and when im driving steady at 45 mph my rpms are around 3k-3500 rpms. I had a blown head gasket about 2.5 months ago and I replaced them. The truck sat for about a month with the blown gasket. I thought the fluid sitting for so long might have effected it. When I drained the trans fluid it had a slight burnt smel but not very strong and I added some "smooth shift" additive when I filled it. Fluid levels are good and temp of both eng and trans are fine but eating through fuel. Need help please.
have the same problem?
Tuesday, March 19th, 2013 AT 2:08 PM