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I have 1997 chevy blazer, and when i turn on my heat my gas gauge drops a eight of a tank every time.

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First, it does take power (AKA horsepower/ MPG) to run the blower motor (approx. 20-30 amps), BUT, it is more likely that the A/C button in on while the heater is running (THAT draws off about 40 to 60 horsepower from the engine/ BAD MPG's)

Posted on Mar 31, 2011


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1 Answer

How do I fix a problem with gas pouring out the back of my 1997 chevy blazer? It's coming out of a part above the spare tire.

We can not know the answer, nor can you

BUT I would suspect, if you drop the fuel
tank, you will find a rotted fuel hose or fuel
pump o-ring leak to fix

Oct 04, 2014 | 1997 Chevrolet Blazer

1 Answer

What kind and how do you fix to where the gas gauge reads correctly in a 2001 Chevy blazer LS 4x4 4 door?

If it isn't the gauge in the dash then it will be the fuel level sesnor in the gas tank. This will require dropping the tank to getvat it. Not a cheap'repair, part is cheap, labor won't be so shop around. I know some guys have just got a tank from salvage then they could just swap out the whole thing quickly.

Jun 04, 2012 | 2001 Chevrolet Blazer

1 Answer

Gas guage shows full all the time. It is a 1997 chevy Blazer lt.

It's going to be a defective sending unit, for the gas gaug, sending unit sit in gas tank.

Jul 22, 2010 | 1997 Chevrolet Blazer

1 Answer

I have a 1997 Chevy Blazer LS, the fuel gauge constantly fluctuates. Usually when I first turn it on the gauge will indicate more gas than is actually in the tank. Slowly as the car is running I see the...

all later model chevy vehicles are plagued with this problem it,s the fuel level sensor mounted on the fuel pump module inside fuel tank unfortunately on some models it,s only available with purchase of whole new fuel pump module that can run as much as $500.00 dollars for just the module not including labor to drop fuel tank and replace I encourage you not to waste time and money with aftermarket less expensive pump module assemblies not to knock any parts people but our shop just installed the 3rd napa fuel pump module in a 98 blazer because the new pump will not read correct amount of fuel finally it was replaced by a pump module assemblie from dealership at cost of $458.00 for pump it now reads correct hope this helps if you need more detailed instructions on how to replace repost at fix ya thanks

Apr 04, 2010 | 1997 Chevrolet Blazer

2 Answers

How do i get to the fuel pump on a 1997 s10 blazer

Unless there is an access panel inside the vehicle above the fuel pump, you will have to remove the fuel tank in order to access the pump. Do not forget to replace the fuel filter. Partially clogged fuel filter is one of the causes of a failed fuel pump.

Oct 10, 2009 | 1997 Chevrolet Blazer

2 Answers


Sounds like water/debris in the gas tank. Try adding dry gas to the tank. Changing the fuel filter also a good idea.

Jun 19, 2009 | 1997 Chevrolet Blazer

1 Answer

Erratic fuel gauge

Check sending unit in tank. My newer Envoy (2005) did the same thing. Unfortunately, they have to drop the tank to replace it and it considerable labor $$ to R&R.

May 19, 2009 | 2000 Chevrolet Blazer

2 Answers

2002 chevy blazer fuel pump (4 door)

yes you have to drop the tank. you will also need a fuel line tool to unhook the fuel lines. before you drop the tank see if tou can reach and wiggle the electrical connection on the top of the tank. these pumps have a pigtail issue. please rate

Dec 08, 2008 | 2002 Chevrolet Blazer

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