I have a 2001 GMC Sierra 1500 SLT 5.3l that I bought used with only 80k miles on it. This truck starts then immediately stalls. Here is a list of things that I have replaced to no avail. Any help would be greatly appreciated.
2001 gmc sierra 1500 SLT 5.3l
Replaced TPS
Replaced TBI
Replaced ignition
Replaced passlock housing
Replaced Ignition cylinder
Replaced PCM/ECM/ECU
Replaced fuel pressure regulator
Truck had codes of P0102, P0105 and P0507
No codes available at this point because of changing PCM/ECM/ECU
Thanks
Jeff