Quirks
1) When I've filled up the gas tank, the first time I start the engine, the starter tends to "run on". i.e. Usually, a touch of the key will crank the engine, and immediately disengage when it starts. But the first time after a fill-up, it doesn't disengage, so I have to turn the ignition off and back on, and then it starts perfectly. This has happened countless times after fill-ups, so is not just a one-off thing. At all other times, it starts up perfectly.
2) After I start the truck (warm or cold), if I pull away hard, it sticks in 1st gear for far too long, then "dithers" as though it can't find second, sometimes for up to several seconds, before engaging with 2nd, sometimes with a disconcerting clunk. It only does this the first time after the truck has been started ... once its been through the gears it shifts flawlessly. Note this only happens when I start off with too much "enthusiasm", if I do my regular gentle "old-guys" pull-off, then everything works just fine through the first shift, and thereafter.
I assume that the first issue must be a software issue, maybe following a different logic path to reset the cluster information for range, etc, as I know of no other connection between my gas cap and my ignition switch.
Anyone out there experienced either of these, or similar quirks?
http://www.revbase.com/BBBMotor/TSb/...dPdf?id=169354
#2 sounds like one the issues that early 11 trucks had with harsh shifts. I believe there was a TSB to replace one of the solenoids and reflash with software updates.
#1. The truck starts up just fine (and doesn't run rough) the second and subsequent times you start it after filling the tank. The first time, however, the starter doesn't disengage as it should. (Also, it fills up just fine).
#2. The truck shifts smoothly and without issues, in general operation. Only the first time after starting does it "lose it" between 1st and second, and only when pulling off hard. At all other times its the very model of smooth co-operation.
I'm very happy with the way my truck runs, in general.
Regarding the starter not disengaging, it’s odd that a fuel fill would affect anything mechanical (other than the fuel pump maybe). If it were me, I’d check the starter or the ignition. If you have remote start, try that after you do a fill up and see if the starter stays engaged. If it doesn’t, might be the key/ignition switch in the steering column.







