My truck won't get spark after it runs for 20 minutes and you turn it off
I replaced the cap rotor coil ignition switch and distributor and it still doesnt have
spark after I shut it off. It will start after sitting for 15 minutes. It's a 6 cylinder gmc
sierra 1500 year 91
get a brand new battery and clean the connection to the chassis ground to 1/0 battery cable....and to the block (near the starter)....with amperage and CLEAN solid power will behave normally~
Search GMC Sierra Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
GMC Sierra Experts