Recent content by JonnyB872

I'm in the Portland, Or area.

I'm not sure where "98" came from. I know most things about my truck, other than the electronically controlled transmission. I've been a tech for over 30 years, but not a transmission specialist by any means. I know for a fact that my rig is a 1991 (not a 98) and I know for a fact that it is an...

What type of scan tool can be used to diagnose? Is it one specifically for transmissions only, or will a regular OBD1 diagnostic scanner work?

I also added a heavier duty trans cooler in front of the radiator. The original was leaking, so I upgraded.

I don't know much at all about electronic transmissions, except what I wasted money on and what I'm learning here. Is there any possibility that bypassing a heater core (due to leak) would cause an incorrect temperature reading? Now that I think of it, the tranny started acting up not long after...

Sounds easier and cheaper to have my own 4L80E rebuilt. I do not have a tranny scanner and don't know anybody who has one. Not keen on paying a bunch of money to ANOTHER tranny shop just to hook up a scanner and check 2 temps. I don't have the money floating around to pay another someone who...

To be honest, I have no idea what is or is not working. Tranny shop owner said it was the cleanest fluid he ever saw, when he took the pan off to inspect. Seemingly, no hard or soft part damage internally. Put it back together, test drove, with computer hooked up, etc. No problem found by tranny...

I am totally new to thetruckstop. I have a 1991 square body 4X4 Suburban. It's a V2500, so from the factory it's a 350 (5.7) with a 4L80E. I have no OD gear, and already spent over $600 at a local, "supposedly" reputable, transmission shop. Still no OD. Was going to just swap out the tranny with...

I am totally new to thetruckstop. I couldn't find where to post a new question or thread, so I'd like to piggy back onto this one. I have a 1991 square body 4X4 Suburban. It's a V2500, so from the factory it's a 350 (5.7) with a 4L80E. I have no OD gear, and already spent over $600 at a local...