Duramax/Allison downshift?

[fun in dirt]

Originally Posted by 1976gmc20

Well, I'm probably just talking into the void right now - but ...

The problem was the "coolant bypass hose" they said the clamp was loose and they don't know how in the world she made it from Montana to Michigan, and then from Michigan to Denver pulling a 10K# gooseneck without it leaking before yesterday!

$340 to repair a loose hose clamp

Would removing or loosening this hose be something a shop would do when draining/flushing/refilling the coolant ???

You're not talking into a void friend, I hear ya
Over the phone diagnostics & on the road repairs are things that cause major headaches & wallet hurt sometimes. Sounds like the good Lord & good luck is on her side though!

[1976gmc20]

Originally Posted by fun in dirt

You're not talking into a void friend, I hear ya
Over the phone diagnostics & on the road repairs are things that cause major headaches & wallet hurt sometimes. Sounds like the good Lord & good luck is on her side though!

Well, a Good Samaritan neighbor of her friends drove 7 hours round trip from the west slope to Denver to haul her and her gooseneck and all her critters to her friends' place.

The thing that's bothering us now is this: one morning after she got back to Michigan her truck wouldn't start. She called for a tow and the driver asked to look at it first. He found the fuel filter housing was loose and it had lost prime. I had just had the fuel filter(s) changed in Billings before she came and got the pickup and drove it back east

I also had the dealer drain/flush/refill the engine coolant, and now the mechanic in Denver says he found a loose clamp on the bypass hose. I can't imagine that they would have messed with that at the dealer but it sure is making me wonder ...? Obviously, I'm not too happy with the Chevy dealer right now. We didn't buy her pickup from them because they don't keep anything that old on the lot, but I bought a 2016 from them a year ago, and I had over a grand worth of service done on the 2002.

Anyway, I'm glad that it's something relatively simple and not something like a head gasket. Now she's got to get a ride back over the mountains next week to get her pickup back. I think when she gets back over to the ranch that she should load up the trailer real heavy and drive it up the west side of Monarch Pass and back just to test it out on a hard pull before she ever takes off with a loaded trailer on a long trip again She's only about 30 miles west of the summit where she's staying now.