Buying cheap car insurance for a GMC Sierra relies on a complicated formula that considers factors such as how you use your vehicle, where you live, and any driving offenses on your record. Drivers in Colorado pay on average $932 a year for Sierra insurance, but that is a projection using a 40-year-old married female driver with full coverage and $1,000 deductibles.

When making auto insurance estimates, the issue arises that you are not 40 and maybe not even a female, possibly single instead of married, or you just want cheap liability insurance instead of full coverage. Auto insurance is not the same for everyone, so the best way to find affordable rates for your GMC is to compare as many rates as possible. To start saving now, get free quotes and you will be able to see rates from some of the most affordable companies that sell coverage in Colorado.

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The trim level of your vehicle tends to have a direct effect on the yearly cost, so the price to insure a Sierra SLE Regular Cab 2WD will be $138 cheaper than the price to insure the fancier Sierra Denali Crew Cab 4WD trim level, as shown in the table below.

GMC Sierra Insurance Rates in Colorado
Model Comp Collision Liability Medical UM/UIM Annual Premium Monthly Premium
Sierra SLE Regular Cab 2WD $144 $282 $368 $22 $110 $926 $77
Sierra SL Extended Cab 2WD $144 $282 $368 $22 $110 $926 $77
Sierra SLE Crew Cab 2WD $144 $282 $368 $22 $110 $926 $77
Sierra SL Crew Cab 2WD $162 $332 $368 $22 $110 $994 $83
Sierra SLE Crew Cab 2WD $162 $332 $368 $22 $110 $994 $83
Sierra SLE Regular Cab 4WD $162 $332 $368 $22 $110 $994 $83
Sierra SLE Extended Cab 4WD $162 $332 $368 $22 $110 $994 $83
Sierra SLE Crew Cab 4WD $162 $332 $368 $22 $110 $994 $83
Sierra SLT Extended Cab 2WD $162 $332 $368 $22 $110 $994 $83
Sierra SL Crew Cab 4WD $162 $332 $368 $22 $110 $994 $83
Sierra SLT Extended Cab 4WD $162 $332 $368 $22 $110 $994 $83
Sierra SLT Crew Cab 2WD $162 $332 $368 $22 $110 $994 $83
Sierra SLT Crew Cab 4WD $182 $382 $368 $22 $110 $1,064 $89
Sierra Denali Crew Cab 2WD $182 $382 $368 $22 $110 $1,064 $89
Sierra Denali Crew Cab 4WD $182 $382 $368 $22 $110 $1,064 $89
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Premium data assumes married female driver age 40, no speeding tickets, no at-fault accidents, $1000 deductibles, and Colorado minimum liability limits. Discounts applied include multi-vehicle, homeowner, safe-driver, claim-free, and multi-policy. Table data does not factor in Colorado location which can decrease or increase coverage prices considerably.

Finding a good quality insurer is difficult considering how many companies are available to choose from in Colorado. The ranking data in the next section may help you decide which auto insurance companies to look at when buying insurance for a GMC Sierra.

The ratings below are only made up of companies that insure vehicles across America, so companies with more of a regional focus are not included in this list. To view rates from these and other top-rated companies, just click here.

Best Ten Car Insurance Companies for a GMC Sierra in Colorado
Company Value Customer Service Claims Customer Satisfaction A.M Best Rating Overall Score
USAA 98 100 100 94% A++ 98.6
American Family 98 89 100 86% A 95.4
State Farm 88 93 96 90% A++ 92.4
The Hartford 94 92 90 89% A+ 91.7
AAA Insurance 88 89 95 91% A 91.2
GEICO 84 93 93 89% A++ 90.3
The General 89 91 89 88% A- 90
Titan Insurance 90 87 91 95% A+ 89.6
Progressive 84 91 93 87% A+ 89.5
Allstate 85 90 92 88% A+ 89.3
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Data Source: Best Car Insurance Companies

Illustration showing the impact of accidents and violations

The ideal way to receive low car insurance prices in Colorado for a Sierra pickup is to drive safe and avoid accidents and traffic citations. The chart below demonstrates how speeding tickets and accidents raise premium costs for each age group. The information is based on a single male driver, comp and collision included, $100 deductibles, and no discounts are taken into consideration.

The data in the chart shows the average cost of a car insurance policy per year with no accidents and a clean driving record is $2,616. Factor in two speeding tickets and the average cost increases to $3,481, an increase of $865 each year. Now include two accidents along with the two speeding tickets and the yearly cost of car insurance for a GMC Sierra in Colorado goes up to an average of $6,431. That's an increase of $3,815, or $318 per month, just for not keeping your driving record clean!

Why you should be shopping around

Colorado car insurance rates are influenced by many factors which can significantly increase or decrease the policy premium. Improving your credit rating, buying a home, or getting a DUI can trigger changes in premium that can make some companies cheaper than others. In addition, insurance companies amend premium rates as often as every three months in order to remain profitable. Heavier than normal losses may result in high rates, while a better loss history can result in cheaper Sierra insurance rates.

The bar chart below shows which company has the cheapest car insurance in Colorado for a 45-year-old female driver with a clean driving record, no accidents, and good financial standing. If we look at prices based on her current risk factors, The Hartford has the cheapest car insurance rates in Colorado at $850 per year. This is $728 less than the average price paid by Colorado drivers of $1,578. Grange, USAA, GEICO, and Nationwide are the remainder of the most affordable Colorado auto insurance companies.

Now we will pretend the driver from above a couple of claims, a lower credit rating, and a speeding ticket. Since every insurance provider has their own unique process for setting rates, getting updated rate quotes may now present a slightly different list of affordable Colorado car insurance companies as shown below.

Auto-Owners now has the cheapest car insurance in Colorado with State Farm, American Family, Progressive, and Amica now being in the top five. This demonstrates why it is important to compare many different companies to find the cheapest auto insurance rates for a GMC Sierra. Auto insurance prices consist of many risk factors and change frequently, so the best company six months ago may now be costing you a lot of money.