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2007 Chevrolet Trailblazer Questions

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When I start my car I have no dash lights(odometer) or radio display. Gauges work and so does radio. At times when I’m driving the displays may come on or maybe the next time I start my car. Sometimes when I start my car the displays come on. What is causing this problem.
2007 Chevy Trailblazer LS (V6) had engine replaced 2013. Immediately following, a hole in the exhaust manifold appeared. Fixed it. Now another manifold hole is looking to make an appearance. Could this be caused by the Catalytic converter not controlling the temperature enough? If so, replace with OEM or standard cat. conv. or upgrade
Relays and fuses
Switch on dash in blower speeds 4&5 do not blow
Transmission fluid is a little low. One time I could not even back up got out let it set for a few went back out backed up fine
they said it is a safety issue but I have to pay out of pocket because waranty is over with.
i think that this is danger for all suvs orcars that this happens to.
have to be cut out of mine it just got tighter when tried to pullon it to take over head
sometimes steers fine sometimes wanders suspect steering rack leaking interanally
I had to pull the fuse out to get the blower motor off. it happens everytime I drive. I have to put the fuse back in to use the air.
AFTER WARMING UP THE BLAZER FOR 15 MINUTES OR SO IN BELOW ZERO TEMPS, THE RPMS REV UP BUT CAR JUST CRAWLS DOWN THE ROADWAY.
I'VE HAD THE BLAZER 7 YEARS, NEVER HAD THIS PROBLEM BEFORE.
FYI - TRANY FLUID IS CLEAN
Error Code B0004
My Trailblazer gages have start going crazy off and on. it looks like my battery is overcharging at these times. It never stalls but keeps going crazy until I shut it off and restart. It used to happen every few months . Now it has been everyday for 3 days.
camshaft position code came on and replaced. No codes now but noise still there. If you touch bottom of engine you can feel vibration and metal on metal sound. Any ideas? Any recalls
I found out the hard way that my front differential is not engaging.
Any know problems/fixes?
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