Why does my GMC Suburban not start up?
Why does my GMC Suburban not start up?
It shoued DTC 15 open circuit in coolant temp sensor, 22 something about the throttle position sensor and 54 which is fuel pump circuit low voltage. BTW, I found out the truck will start if I keep the gas pedal to the floor when cranking, however the engine just dies as soon as I let off the pedal.
What is fuel pressure on GMC Suburban 5.7?
Fuel pressure shows approximately 14 psi at the filter when the pump is running. As soon as the relay kicks the pump off the pressure drops to zero quick. I think this is normal as some TBI systems have a built in release.
What is signal wire on GMC Suburban 5.7?
The signal wire goes from 0.51 volts at an idle to 4.56 volts at wide open throttle. Oil pressure sensor tan middle wire shows a good ground. Grey wire show 8.75 volts and the red wire shows 12.37 volts. If I jump the two end wires together the fuel pump runs constantly however, this time is wont start.
How many ohms does a GMC Suburban have?
Coolant temperature sensor showed… approximately 2.5 ohms at room temperature and went down to 0.21 ohms in 190 degree boiling water. It started to go back up slowly once it was removed from the hot water. Throttle position sensor shows…
It shoued DTC 15 open circuit in coolant temp sensor, 22 something about the throttle position sensor and 54 which is fuel pump circuit low voltage. BTW, I found out the truck will start if I keep the gas pedal to the floor when cranking, however the engine just dies as soon as I let off the pedal.
What to do if your GMC Sierra won’t start?
Let sit for awhile, turn key, won’t start, turn key off, turn key again, starts up and runs great. A week later, same issue. I went to work everything great, went to go home, wouldn’t start. Tried to turn key a few times, won’t start, let sit about 15 min., turned key, started up. Stop to get gas 15 min. later, wouldn’t start. Stranded for 2 hours.
How to troubleshoot a no start GM 4.3L pick up?
Testing a Cranks but Does Not Start condition on your GM 4.3L, 5.0L, 5.7L pick up, van or SUV is not that hard to do, if you have a solid diagnostic strategy. In this article I’ll show you the basics of testing such a problem.
What to do if your GMC Yukon Denali won’t start?
48 people found this helpful. I have a 2000 Gmc Yukon denali, 5.7 litter, it cranks but won’t start it does have spark in coil, but No spark in #1 sparplug I put new distributor and new coil new sparplugs, new plug wires,checked out fuses there all good]
Why is my Chevy Silverado 1500 not starting?
However, today, when the truck will crank and start, the antitheft icon goes off after a few seconds with the key on and stays off while the truck is running. It never flashed either today or yesterday though. And I don’t know if the antitheft system disables cranking or starting or both.
Let sit for awhile, turn key, won’t start, turn key off, turn key again, starts up and runs great. A week later, same issue. I went to work everything great, went to go home, wouldn’t start. Tried to turn key a few times, won’t start, let sit about 15 min., turned key, started up. Stop to get gas 15 min. later, wouldn’t start. Stranded for 2 hours.
48 people found this helpful. I have a 2000 Gmc Yukon denali, 5.7 litter, it cranks but won’t start it does have spark in coil, but No spark in #1 sparplug I put new distributor and new coil new sparplugs, new plug wires,checked out fuses there all good]
Why does my truck not start at night?
So last night I had to run out and when I got home I forgot to turn them off, so they were on all night. This morning my truck won’t start, so I tried to jump it which didn’t work.
