What could it be ?
My trail blazer won’t go past 2500 rpms, auto
zone printed out a paper saying it was either
the crank position sensor or a timing sensor,
someone else told me not to waist my money
it was the timing chain stretched. Someone
please help I have done put a map sensor,
plugs, coil packs, fuel regulator on. I’m tired
of buying pets and it’s not the problem