obd1

  1. Aaron55

    Wiring issues!

    Hello, new to the forum and new to working on OBS trucks. I recently purchased a 1989 c2500. I have been fixing it up and have been meaning to get around to working on the check engine light. I tried shorting the A and B terminals in the proper fashion to see what I could pull from the flashing...
    • Aaron55
    • Thread
    • electrical issues obd1 service engine soon wiring wiring diagram wiring help
    • Replies: 40
    • Forum: Electronics
  2. W

    Connector ID and Evap system advice

    Newbie back at it: I need help with connector ID on three unplugged connectors. Recently bought the truck for cheap and am going through everything I can think of to make sure she’s up to spec. Anybody know what these are and where they connect? A previous owner also seems to have bypassed the...
  3. R

    GMC SUBURBAN 1994 7.4L 454 OBD CODE:32,34,36

    Greetings I’ve done my OBD-1 check and it shows that I have code-32,34, & 36. Now I don’t know how to fix it so I’ve been looking for ways to fix it but It was on another vehicles and I’m not sure if it applies to my truck as well. Lastly, the codes indicates as shown below: Code-32: EGR...
  4. BigTater

    Risks of driving without TPS?

    Hey guys, I have a 94 k2500 with 5.7 and 4L60E. Sat in a field for about 11 years before I rebuilt a donor engine in it and have driven about 2000 miles on the break-in. Before I got my hands on it this truck had the tbi swapped for a carb and appropriate intake (Holley 4160 and Edelbrock...
  5. fancyTBI

    Kelsey Hayes EBC310 Diagnosis - Error Code 68, 73, 86

    Vehicle: 1995 C2500 (8600gvwr) with 4WAL. Issue: Air trapped in ABS module, cannot bleed via scanner (Snap-On Solus Pro with ver. 17.2 software), DTCs present, can't bleed with DTC's present, scanner displays 0 codes, jumping terminals A & H displays codes. Codes: Code 68 - Locked motor or...
  6. TwistedTahoe

    Backfiring, Bucking and stumbling

    I've got a 1995 Chevrolet Tahoe 5.7L 4wd 4l60e and it backfires at any rpm. I started with the basics; fueling, timing spark, and found everything was in spec. I'll put together a list of new parts and their brands if I can recall them(Don't get mad at me for throwing parts at it, I had these...
  7. S

    obd1 issues

    hello all i am brand new to the gmt400 scene. i bought the truck and decided to do an engine swap. the new motor is a 355 sbc with a holley sniper efi system that is stand alone. i went with a th350 so i dont need to have the ecu trying to shift the truck and freaking out. i want to use the...

Latest posts

Members online

Total: 2,343 (members: 38, guests: 2,305)

Forum statistics

Threads
77,834
Messages
1,640,688
Members
80,538
Latest member
Curtwood1
Top