I have 2006 gmc Sierra sle 4x4. How can I get from hesitating and surging when stepping on the gas


Asked by Oct 06, 2013 at 12:18 AM about the 2006 GMC Sierra 1500HD SLE1 4dr Crew Cab 4WD SB

Question type: Maintenance & Repair

I have replaced the wires and plug and check engine light has not come on.  I put ona
code machine. It said the mass sen. Was bad so I placed it run like a new truck.  Then
the check engine came on for the first time, now it is run ragged again.  I reset the check
engines light. It runabout 5 miles down the road and it is on again. Code po101 & po171.
What do I need do need to do next.

2 Answers

yes...those are codes for MAFand after combustion levels...I'm inclined to blame the TPS, engine temperature and IAT sensors~you might check the output and replace each of these sensors...The EGR may be bugged up with carbon too....the fuel pump may have it's vacuum source impeded or diaphragm torn so as to not deliver the correct pressure~

Dillon Pond

I'm having the same problem with my 2006 GMC Sierra 1500HD 6.0 litre. It lags when I try to give it power then it will respond and everything will be normal and it's fine a highway speeds. I cut my cats off because I had hoped it was the problem but it wasn't now I have codes for those but also my o2 sensors because everything it's accurately reading. I've come to the conclusion that it's a possible intake leak or gummed up exhaust system because it runs better when you try to accelerate and give it more power because I changed the MAF and that didn't solve anything. Only other could be the fuel pump but if it's that it should stop and not work.

Your Answer

Add photo

Related Questions

  • Fuel pump 7 answers

    I turn my truck off and the fuel pump stays on

    2002 GMC Sierra 1500HD


    Maintenance & Repair

  • Mods on intakes, dual exaust and trans cooler 2 answers

    This is a good truck with plenty of power. I know I can’t get much better that 14MPG, but I need some advice on mods. I’d like to add a good intake for more air, dual exhaust and is the trans cooler...

    2003 GMC Sierra 1500HD 4 Dr SLE Crew Cab SB HD


    Car Customization

  • Struggles starting and dies when you let of gas 1 answer

    Changed plugs and coil packs on my 03 1500 5.3 liter. Still sloles out.

    2003 GMC Sierra 1500HD


    Car Customization

  • 2006 sle gmc sierra 5.3. Vin T. 4x4 1 answer

    Having trouble still with my truck. Still run lean and seem to be missing on the the left bank. Ck wires, plugs, injectors,coils, replaced intake gaskets,map sensor, 4 o2 sensors,ck compressions, ...

    2006 GMC Sierra 1500 SLE1 Extended Cab 4WD 5.8 ft. SB


    Maintenance & Repair

  • On a 2009 GMC Sierra 1500 SLE. where are vacuum lines 1 & 2 located 7 answers

    2009 GMC Sierra 1500 SLE


    Maintenance & Repair

Search GMC Sierra 1500HD Questions

GMC Sierra 1500HD Experts

#1 reverend1735
Reputation 40
#2 bob_nueske
Reputation 30
#2 pauljboudreau
Reputation 30
View All

Related Models For Sale

Used GMC Sierra 1500"
1,033 Great Deals out of 55,955 listings starting at $2,400
Used GMC Sierra 2500HD"
161 Great Deals out of 15,290 listings starting at $1,900
Used Chevrolet Silverado 1500"
2,379 Great Deals out of 143,345 listings starting at $1,195
Used Chevrolet Silverado 1500HD"
20 Great Deals out of 308 listings starting at $3,995
Used Ford F-150"
3,174 Great Deals out of 215,800 listings starting at $1,000
Used Dodge Ram 1500"
537 Great Deals out of 13,898 listings starting at $995
Used Chevrolet Silverado 2500HD"
387 Great Deals out of 33,935 listings starting at $2,998
Used GMC Sierra 2500"
212 listings starting at $4,999
Used Toyota Tundra"
642 Great Deals out of 26,382 listings starting at $2,500
Used Ford F-250 Super Duty"
457 Great Deals out of 42,748 listings starting at $1,000
Used Dodge Ram 2500"
155 Great Deals out of 5,800 listings starting at $2,289
Used Toyota Tacoma"
622 Great Deals out of 30,001 listings starting at $2,850
Used Chevrolet Tahoe"
1,042 Great Deals out of 36,533 listings starting at $1,695
Used Chevrolet Silverado 2500"
5 Great Deals out of 283 listings starting at $3,290

Used Cars For Sale