jfox

just recently swapped heads on my 2005 lsj put it in time 1 tooth off and didnt feel like doing it myself due to the wonderful pa weather so i took it to the chevy dealership to have them put it in time ... before i took it there it ran but ran rough now they have gotton me for almost 500$ to put the damn thing in time and on top of it, it is no longer getting spark. i just put new plugs in it, where should i start on trying to figure out why its not getting spark , cant afford to pay the stealership any more money to fix this .... it has to be something stupid

nhanson

iTrader: (1)

Make sure all sensors are plugged in. Check for codes

Tjolley

crank sensor...

bluebalt07

iTrader: (8)

Check connections and grounds first I'd say

mrbelvedere

iTrader: (3)

tell them it ran when it came in and they need to find and fix what they messed up

there are to plugs that are the same i think it is the coil pack harness and the throttle plate if they mixed those up it wont fire

jfox

what would i need to do to the crank sensor ?

jfox

do you know of any other grounds other then the one on the valve cover that i could check thats the only one i know of and everything is plugged in

mrbelvedere

iTrader: (3)

the crank sensor is right above the starter

jfox

i just ran codes on it and the only one it came back with was pcm keep alive memory , would that mean the pcm needs replaced?