TerryKing
Newbie
Hi Everyone,
About 6 months ago the AT on my 92 Yukon (140,000 miles) died. I decide to keep the truck and I installed a new GM Crate 350 which runs great.
I had the dealer install a new transmission (Like $3K total) with 12M 12,000Miles warranty. They replaced cooler lines (I have a new radiator) and did a flush and test on that.
Ran 100% normal for 3000+ miles, including about 1800 mile trip with 3000 lb camper.
3 days ago, started another trip with the camper, checked everything, ran great 180 miles and then suddenly the 1-2 shift didn't happen until high RPM (like 2000 to 3000) but seemed OK in 3 and normal shift to 4th/OD. Then 50miles later it slipped, ran in 3rd and then REALLY slipped and stranded me. Just got off Route 95 :-(
So towed to Union NJ Buick/GMC dealer who finally pulled the tranny and said it must be replaced.. "There's metal all over the inside". They have a replacement coming in tomorrow and are running the flush/test of the cooler.
Dealer guy said "this only happens from overheating".. Hmmm. Ran pretty level and easy. 35 degree weather. I have a gauge on the radiator OUTlet which did not rise and was about 170.
I put the original $$ into this to get reliability. Original trans ran 140,000 miles.
I'd like your opinions on What Happened Here... Did something internal just break, and then metal parts killed it? Could it have been overheating?? Why?? How??
Hope to be back on the road tomorrow, but I sure would like ideas on What happened, and what to look for for the future...
Thanks!
Terry King ...On the road from Vermont to Florida...
terry at terryking dot us
About 6 months ago the AT on my 92 Yukon (140,000 miles) died. I decide to keep the truck and I installed a new GM Crate 350 which runs great.
I had the dealer install a new transmission (Like $3K total) with 12M 12,000Miles warranty. They replaced cooler lines (I have a new radiator) and did a flush and test on that.
Ran 100% normal for 3000+ miles, including about 1800 mile trip with 3000 lb camper.
3 days ago, started another trip with the camper, checked everything, ran great 180 miles and then suddenly the 1-2 shift didn't happen until high RPM (like 2000 to 3000) but seemed OK in 3 and normal shift to 4th/OD. Then 50miles later it slipped, ran in 3rd and then REALLY slipped and stranded me. Just got off Route 95 :-(
So towed to Union NJ Buick/GMC dealer who finally pulled the tranny and said it must be replaced.. "There's metal all over the inside". They have a replacement coming in tomorrow and are running the flush/test of the cooler.
Dealer guy said "this only happens from overheating".. Hmmm. Ran pretty level and easy. 35 degree weather. I have a gauge on the radiator OUTlet which did not rise and was about 170.
I put the original $$ into this to get reliability. Original trans ran 140,000 miles.
I'd like your opinions on What Happened Here... Did something internal just break, and then metal parts killed it? Could it have been overheating?? Why?? How??
Hope to be back on the road tomorrow, but I sure would like ideas on What happened, and what to look for for the future...
Thanks!
Terry King ...On the road from Vermont to Florida...
terry at terryking dot us
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