Random no start problem - looking for advice
Hello all -
My '06 Z71 Colorado (5 Cyl) had the oft reported won't start till ya wait 10 minutes problem. So, like everyone else, I went through the "take it to the dealer, we can't reproduce it" routine. Finally it threw a misfire fault, they did a compression check, and found the following:
Cyl 1: 15% leakage
Cyl 2: 85% leakage
Cyl 3: 44% leakage
Cyl 4: 15% leakage
Cyl 5: 20% leakage
So, they replaced the head, and also the cam.
Problem went away. That was in March, @ 65,000 miles. Now I'm at 75,000 miles... and... yes .... I have the same problem again. Cranks, no start, wait 10 minutes, fires right up.
I don't have a passlock system, and am religious about changing the oil with pure synthetic on a regular basis.
So I'm guessing I'm going to take it to the dealer for another compression check.
My question - and I know this is difficult to answer, but is it remotely possible a replacement head could again need to be replaced after 10,000 miles?
I'll let ya'll know what compression results come back from the dealer..... what I'm trying to avoid is:
1) We can't reproduce it (until of course I go out of the 100K powertrain warranty).
2) We don't know what the problem is.
Guess I'm just looking for any other areas I can have the dealer check out and repair before I go out of warranty.
Is it possible the truck has the passlock computer... but not a passlock ignition?
This is really starting to bum me out..... I'm not one to throw a temper tantrum at the dealership.... but at this point I feel llike I either want to just take the truck back to the dealer and leave it (which I would hate to do, because despite all the problems - and I've had ALL the common ones - I really do like this truck), or have them replace the whole engine (which, I suppose, would only delay but would not fix the problem).
Any comments are most appreciated.
Last edited by MMM; 08-28-2011 at 08:05 PM.