Thread: Hard shifting 4T65E in '99 GTP

If it is slight.. I'd look to the easy things first. You saw my response in that thread. I found a bad coil, and ... couldn't find it scanning or anything else. The only way I found it was to swap the parts out with spares. Was not fun to fine at all.

Make sure your TB is clean
Your maf is clean
Your TPS is solid and not fluctuating
If you have spare coils..swap them on.