2001 GMC Yukon Starting Issues

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TruckerSteve1986

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Hi All;

Really need some help. I have a 2001 GMC Yukon XL SLT Autoride with the 5.3 Vortec engine. I live in So Cal. My problem is as follows:

So, we recently had about 6 days of nonstop rain day and night. And with everything going on, I haven't worked since LAST Saturday April 4th. I say all of this, because, last Saturday afternoon, was the last day I drove and parked the Yukon. Well, with all the nonstop cold rain, I didn't go anywhere or even start the Yukon. Well yesterday afternoon (Saturday the 11th), I went out to go somewhere, and the Yukon cranked one time, made an odd "locking" sound after the crank, then nothing. Everytime I turned the key after, just heard a click sound, which I pinpointed that it was coming from a relay in driver-side fuse panel. The fuse was labeled as "Unlock jpr" on the panel. While turning the key and simultaneously touching this relay, I could feel the click. Anyways, my battery had a 3-year warranty and I recently bought it in September of last year. So I took it back and exchanged it as it was completely free to do so. I put a new battery in and same thing. No crank or anything. When I put a new battery in, I completely cleaned my battery terminals and even replaced the bolts that hold the terminals on as well and tightened them down. They are super tight so I know those are good to go. My fear is, and hope that I don't have a seized engine for some reason. Because when I initially tried to crank it, it hadn't been started in over 5 days. The temperature here was only about 40 degrees during those 6 days of rain nonstop. Not freezing, but cold none the less. I have no idea what to do and I was wanting to know if anybody can recommend anything. I even put the transmission in neutral and tried to start it that way, but to no luck. I have my first born baby due in 2 weeks, and this is my only vehicle. I'm stuck and lost. Please help. God bless
 
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TruckerSteve1986

TruckerSteve1986

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Have you tried running it for any codes?

I haven't in a few months because the check engine light has been on due throwing code for needing to replace bank 1 Sensor 1 O2 sensor. which I've known about. But it's always start up and drove fine with this issue. Just haven't had the time to get it fixed. This particular issue that I posted, literally just started yesterday. Don't know why
 

Tonyrodz

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I haven't in a few months because the check engine light has been on due throwing code for needing to replace bank 1 Sensor 1 O2 sensor. which I've known about. But it's always start up and drove fine with this issue. Just haven't had the time to get it fixed. This particular issue that I posted, literally just started yesterday. Don't know why
That might be a good 1st step. Might point you in the right direction instead of just grasping at straws. Do you have a scanner?
 
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TruckerSteve1986

TruckerSteve1986

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That might be a good 1st step. Might point you in the right direction instead of just grasping at straws. Do you have a scanner?

I have a basic scanner. Just a code reader. Which I will go check in a moment. But I'm not sure it's going to show anything because I had the battery out and disconnected for a couple of hours
 
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TruckerSteve1986

TruckerSteve1986

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Also, when you turn the key do you hear the fuel pump coming on? What's your fuel pressure as the key is turned? Getting spark at all?

Yes I can hear the fuel pump engage. just have absolutely no crank at all. Ever since I tried to crank it yesterday, it literally only cranked once, made this lock up sound, and then had nothing with the turn of the key after that. Only lights and power. That's it
 

Tonyrodz

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Yes I can hear the fuel pump engage. just have absolutely no crank at all. Ever since I tried to crank it yesterday, it literally only cranked once, made this lock up sound, and then had nothing with the turn of the key after that. Only lights and power. That's it
I wonder if your cylinders are filled with gas. If that was the case you could bend a pushrod.
 

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