LVJJJ

The "new" great shape, in and out, '94 Suburban I just bought didn't pull my trailer very well, it really struggled even to get up little freeway hills. So I thought it might need a tune up. Pulled the plugs, wires and cap and it appears that this is all original equipment dating from 1994, 126,000 miles later. The plug bodies are rusted, the gap is a lot bigger than .035 and the coil connector on the cap was rusted and corroded so bad I can't see how it was making contact. The wires were AC Delco and in perfect alignment with the little plastic looms and they had never been off. The difference in power with the new components is amazing, a huge difference. I couldn't even get it to shift down into second once it shifted into 3rd no matter how hard I punched the pedal. Anybody ever heard of plugs, wire & cap & rotor lasting 22 years and 126,000 miles?


Even tho this Burb has the tow package with oil cooler, transcooler, hitch, wiring etc., I want to add a trans temp gage. Are there any threaded holes or bungs in the transmission body of the 4L60E trans for a sending unit? Hate to pull the pan to install a bung or try to put a sending unit in the fluid lines.

tech2

nice!
check the fuel filter...its probably in the same condition.

LVJJJ

did, a lot of black gas came out of it.

tech2

the trans temp may be a parameter id that the pcm displays. if it does, you can get a reader that plugs into the dlc to display this data.

LVJJJ

what will they think of next?

tech2

the 1999 and newer build have this. I bet yours does to as you say its an "E" Electronically controlled trans. If the 2500 clusters of the same year have a temp gauge; I wonder If you could just swap a used cluster and have it programmed?

LVJJJ

I widened the plug gap from .035 to .045 and it runs even better, I'm so happy!


Because the left turn signal doesn't cancel, I bought a "loud" flasher, but can't find where it plugs in????