speedometer wiring for 01 5.3 into 91 gmc k1500

[twisted954]

Glad this helped. Took the truck out for a test drive this evening...looks like all the bugs are worked out. I will be doing a write up shortly...there are a lot of helpful things I learned that are different from the TBI trucks to the newer models

[scotte]

finally got my speedo working wired as suggested i tried everything with no luck and finally swapped to a different cluster i had laying around then it just worked

evidently my cluster let the magic smoke out at somepoint (trucks been sitting for a year or so)

now i need to finish my efan wiring and drive it some (drove it fifteen miles last night & filled it up with premium. trying to add some octane to the half tank of year old gas)

now it needs tires nothing like square 285/75/16 bfg's

[twisted954]

HAHAHAHA...Yeah, my tires are pretty flattened out at this point too after sitting for a year...lol...good news is I have a single wiring issue with a fan relay to tackle and this is DONE. I put the truck back up on the rollers yesterday, and did some final street tuning...had to lean out the idle a bit but other than that...speedo and ECU were good for speed signal and looks like the registered speed at the gauge was as good as it always was...probably a tire thing because it always registered a little faster than actual.

[scotte]

got my efan wiring done and balanced my square bfg's (23 OZ TOTAL!)

drove it another 15 miles before my transmission blew lost 3rd and 4th

the good news is that it was still under warranty (bought from local salvage yard with 90 day warranty)

and they supplied another one and extended my warranty to 6 months

this time i'm having my trans guy go thru it (master kit,beast sun shell and 29 tooth sprag) no need to build it any better than that and the 5.3 is stayin stock and I don't tow anything

[pacobeagle]

going to see if this helps me, I've got a 1997 GMC with a 2000 4.8l swap. I've driven it a total of two miles....no speedo or trip working. The ABS is on as well. Now that being said, the speedo sensor was "Y'd" to both the OBS ecu and the NBS ecu. Supposedly, the signal was split in order for new ecu to run shifting duties and the old ecu to deal with gauges.

Any suggestions