Tag Archives: Chevy Trailblazer

Chevrolet Trailblazer auto repair help and advice. Read questions, answers, join or live chat or repair forums. Professional mnechanics online.


Chevy Trailblazer Surges 40 to 60 MPH

My 2005 Chevy Trailblazer that surges while maintaining a speed between 40 – 60 mph. I notice mostly while driving on the freeway. But also trying to maintain constant speeds. The surging stops if I let up off the gas pedal right away while driving. I have been told that I may need to change the fuel filter, but then I had another mechanic said…

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2002 Chevy Trailblazer RPM’s jump up and down

Hi i have a 2002 Trailblazer and my engine light is on. i just had to replace a purge valve, cleaned the throttle body, and replaced the 6th cylinder. While i was driving my car was jerking back and forth while my rpm were dropping then jumping back up again. I’m not to sure what is going on. Answer: Not sure what you mean by…

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Chevy Trailblazer Acceleration Problems

I just bought an 03 Chevrolet Trailblazer ext. Problem that I’m having is, when I’m driving doing 50-65 it acts like it accelerates and then slows down? N keeps doing it!! Please help me with this problem.. Thank u. Answer: If you mean that the engine is revving up and down, not that the truck is actually speeding up or slowing down, then this sounds…

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2002 chevy trailblazer stall and oil light

When I stop at red light oil pressure gauge drops to zero and then back up and engine tries to stall. Then i take off and its fine, it only happens driving in town,not on interstate. Any help? Answer: The light is coming on because it is nearing a stall. The stalling is the main problem. Check fuel pressure, carbon in the throttle, scan the…

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2006 Chevrolet Trailblazer Engine Light And Misfire Codes

2006 Chevy Trailblazer with 4200 engine and 50,00 miles. why a cylinder #4 and #6 leak? ProTech: What kind of leak? Sorry 50,000 miles. the dealer said they did a leak down test.and the head has to come off for repair. $3,ooo job they say and told my wife vehicle is not worth fixing . Give me a break!! The 2005-2007 models had cylinder head…

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Chevy Trailblazer Heat Core Replacement Procedure Pictures

This week I had the pleasure, or should I say displeasure of replacing the heater core on a Chevrolet Trailblazer. This is not the older body style Chevy S-10 Blazer, but the newer body Trailblazer. The customer’s complaint was the usual of the windshield and side windows get fogged up when the heater or the defroster is on, and the sweet smell of antifreeze through…

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2002 Chevy Trailblazer Dies Out

My 2002 Chevrolet Trailblazer stalls when sitting at a red light but not all the time,rpms go up then drop to 200 and car cuts off,already cleaned throttle body,changed fuel filter,changed map sensor,changed exhaust cam actuator solenoid and still stalls,any ideas would be greatly appreciated! ProTech: Is the check engine light on at all when it dies out? No check engine lite. Ok, it does…

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2006 Chevy Equinox Temp Gauge and Trailblazer Heater Core

2006 Chevrolet EQUINOX … AFTER A COOLANT SYTEM FLUSH MY TEMP GAUGE SHOWS A COOLER TEMPSERATURE THAN USUAL..CHECK ENGINE LIGHT HAS COME ON…OTHER THAN THAT CAR RUNS FINE ? ANY IDEAS ON WHAT IS CAUSING THIS. ProTech: You probably need a thermostat now. After the flush, debris has gotten clogged in the thermostat and it is stuck open…that will set a code as well. OK…

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2003 Chevy Trailblazer No Engine Power

I have a 2003 Chevy Trailblazer with 146,00 miles on it, the problem is lack of engine power, I put the scanner and it showed up this code P0172, I did fuel injection service, replaced fuel filter, also changed spark plugs & cleaned up the throttle body. any ideas? ProTech: How about the air filter? Have you checked that? Yes i changed it as well.…

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2005 Chevy Trailblazer Runs Rough at Idle With No Compression

#1 cylinder in my 2005 Trailblazer has no compression. I applied air pressure and it sounded like the exhaust for no air came out f the throttle body. There was air coming out of my # 5 cylinder with the #1 at TDC. wanted your opinion on if you think it is an exhaust valve not seating? ProTech Yes, I would think that is your…

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2007 Grand Prix Headlights Keep Going Out

I have a 2007 Pontiac Grand Prix and my headlights keep going out. Mechanic JK Both sides at the same time? Do you mean the bulbs are burning out, or just they go off. Both sides at the same time one day they went out for two days and came back on. OK. Give me a moment to look at a few things… Do you…

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