What is your question?
·
usually going up mountain passes.
What makes this problem better or worse?
nothing.
How long has your 2007 Chevrolet Silverado 3500 Classic had this problem?
once in awhile
Visitor
May 9, 2019
0 people have answered this
1 person has answered this
1 Reply
I am sorry, no guessing to be had here. Testing needs to be performed to find out what is happening.
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