I was driving to work this morning and around 7:00 am. it was approximately 20 degrees outside and i tried the rear defroster. the rear defroster has worked only about 20% of the time for the last few months and not at all for the last 3 weeks; so needless to say i was very surprised when it actually turned on today. 10 minutes after turning on the defrost i was driving approx 30mph through town when i heard a loud bang inside the truck. it was loud enough that i swerved and looked around to see if people were throwing ice chunks at cars or shooting bb guns. a few minutes later i noticed that the rear windshield on the driver side of the truck had completely shattered. the only thing holding the glass together is the tint tape. the window will need a complete replacement.
The heater core leaks coolant into the interior compartment fogging the windows and preventing use of the heater system to defog/defrost window providing an unsafe driving condition during frosty or rainy days. core has been replaced now 4 times using manufacturer parts or aftermarket parts. all technical bulletins have been followed to try and complete the repair successfully. the fix has not lasted. date listed below for when occurred is date of last occurance.