This isnt about a ck series truck so dont hate me to hard haha. Any ways my father owns a 2000 chevy tahoe z71, and hopeing some one can give me some ideas about what might be the problem with it. Every once and a while the darn thing just wont fire up, itll crank for ever but not actually fire. Now its got spark, has plenty of fuel pressure, and seems like it only happens right around the time that it rains. Hes had it towed into a shop a couple of times after sitting for a couple days with the no start condition and as soon as it gets to the shop it starts right up. Iv even tried hitting around the fuel pump while starting to see if itll fire with no luck. Any thoughts would be appreciated
CK5
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Odd question for any interested
- Thread starter 84bigblue
- Start date
Get on a forum that deals with those similar year trucks like Silverado forum or similar..... Like this site if you get vehicle specific you'll get better answers generally!
Good luvk
Good luvk
try a different ignition key ..
my friend had a olds that was almost the same thing . his key chip was weak and worn out . swapped with spare key and problem solved .
my friend had a olds that was almost the same thing . his key chip was weak and worn out . swapped with spare key and problem solved .
Wish I knew for sure, but had a friend with a similar issue with a 2003. Took it to the dealer several times and never got the issue resolved. 
He finally just got rid of it.
He finally just got rid of it.
A friends 2000 Chevy 1/2 ton 4x4 had a cold start problem for a long time ,every winter once it went below 30 degrees the truck required a long cranking period,or several attempts to get it to start--once it did,it re-started immediately the rest of the day,until it sat long enough to be completely "cold"..
He replaced the fuel pump when a pressure test showed borderline low pressure (was original with well over 110K on it)--that helped NONE,neither did replacing the coolant temp sensor and some other parts..
What did finally fix it was a new wiring harness from the ignition switch to the main harness,located up under the steering colum..
A dealer tech advised him they had to replace a "lot" of them under a silent recall...
That was 3 years ago...
The truck was starting right up like it should until a few days ago--its doing the same thing as before again now,along with stalling while your driving along,and it takes several attempts at cranking to get it to start again--then it runs fine for awhile,ranging from no more issues that day,to it stalling again just a few miles away..
He is going to replace the ignition switch and that harness this time,the dealer tech advised him to do both at the same time--but he didn't feel like doing it at the time..
He was unsure if the ECM would have to be re-flashed if he put a new lock cylinder and key in the truck,so he's first going to put just the new switch and harness in,and see if that cures it..
Issues like these are why I'm so stubborn about getting anything thats not "old" to drive..
He replaced the fuel pump when a pressure test showed borderline low pressure (was original with well over 110K on it)--that helped NONE,neither did replacing the coolant temp sensor and some other parts..
What did finally fix it was a new wiring harness from the ignition switch to the main harness,located up under the steering colum..
A dealer tech advised him they had to replace a "lot" of them under a silent recall...
That was 3 years ago...
The truck was starting right up like it should until a few days ago--its doing the same thing as before again now,along with stalling while your driving along,and it takes several attempts at cranking to get it to start again--then it runs fine for awhile,ranging from no more issues that day,to it stalling again just a few miles away..
He is going to replace the ignition switch and that harness this time,the dealer tech advised him to do both at the same time--but he didn't feel like doing it at the time..
He was unsure if the ECM would have to be re-flashed if he put a new lock cylinder and key in the truck,so he's first going to put just the new switch and harness in,and see if that cures it..
Issues like these are why I'm so stubborn about getting anything thats not "old" to drive..
scpaul
1/2 ton status
When it won't start, could you use a heat source (work light, hair dryer, etc) to warm or dry different components to see if one changed the symptoms?
Paul
Paul
rayfin
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What did finally fix it was a new wiring harness from the ignition switch to the main harness,located up under the steering colum.. THAT SOUNDS RIGHT...
