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Has anyone had to remove a evaporator core from a 96 GMC? Well, here are some pictures. I wouldn't recommend it! LOL But mine did need a good cleaning.

Let guages equalize with engine off. With 134 the low and high pressure side should read roughly ambient temp plus or minus. This will get you close. That is if you don't have a thermometer that goes low enough. I would rather see a touch lower than ambient.

The other day I had scan tool on, 75* ambient, 140* @ 65mph.

I hope it's ok, that's how I did mine!

Yeah, I put dual stats on my truck, and used a 15mm ratchet wrench. Worked pretty well, but had to be patient getting it on the nut.

LOL you said retarded...:willynilly:

I would like to buy two sets, please...

Did some pump work the other night, and a ratchet wrench works pretty well on the drivers side nut.

Has anyone used an OTC genisys? I have been given one for the weekend, and I was hoping to do some timing adjustments. I have figured out all of the easy stuff, just wondering if anyone can tell me more.

I've got plenty of tools, but I doubt I'll be able to talk the wifey into a scanner! LOL

Allright, thanks guys! On that subject then, what is recommended for a tune?

OK, thanks AK, I am beginning to understand. So anything past -1.78 I am doing for diesel clatter?

Thank you WW, interesting read. Just putting together info. I enjoy my pickup, I don't want to send it soaring.

What about the magic -1.94? Why just -1.5 to -1.78? Is that easier to accomplish? Sorry, seems like you answer one qustion just to have me bring up two more.

Ok, now that we have figured out that it is safe, what benefit is gained from the -1.94 offset? Power gains? Milage gains? I can understand you can't have your cake, and eat it, too. I am just wondering if it worth all of the trouble.

My question has to do with engine damage vs. timing and fuel. I would like to try the -1.94* TDCO, but my dad had a 6.2 that had cracked the heads, and said that timing had something to do with it. Can you clarify this for me? Is the -1.94* offset good? Will I do any damage to my engine? I...

I was happy with them. Gave them a call, they were very friendly. About 3 days later I had the pump in hand. I've got about 8000 miles on pump, and it is running strong!

I would use a shorter belt. On my 96 the belt has stretched to max on tensioner. I have my home made TM set at about 12 peak, and I have not coded yet. It will run about 10 on hard acceleration, and 4-5 down the road.

Looks good! Just something about a plow that looks bad a$$!

The best way to describe them so far!!:thumbsup: