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OBD1 issues - 21& 87

My 94 Cheyenne 350/4L60E has 2 codes, 21-TPS signal high, and 87-EEPROM flash memory error. On 21, I changed the TPS (housing was cracked) before it had this problem, and all was well for a short time then truck started stumbling off-idle and idling high. Also What are effects of 87? No vacuum...
- Poncho72
- Thread
- Sep 4, 2018
- Replies: 1
- Forum: Engine Performance + Maintenance
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4L60E Messed up? Help Within

SHIFTS TOO SOON, through all gears? my recently rebuilt 94 SWBRC 350/4L60E shifts from 1-4th way to fast unless i am really accelerating. if i take off at a fairly slow pace it will shift out too fast. sometimes it hunts through the gears up and down unless i accelerate or let it coast...
- Poncho72
- Post #30
- Apr 29, 2018
- Forum: Transmissions
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How to disassemble 95-98 mirrors

As the title says, I want to take apart to paint body color. What’s the trick to removing the glass assembly to access the screws in back?
- Poncho72
- Thread
- Mar 18, 2018
- Replies: 0
- Forum: Paint / Body / Detailing