Grumpy Grunt Auto LLC

Grumpy Grunt Auto LLC All Veterans and first responders get 10% off on labor with approved ID. If wrong part a $40 show up fee must be paid. We at Grump Grunt Auto got your 6!

We do offer repairs and diagnosis on foreign vehicles (BMW, VW, Infiniti, Kia, Toyota, etc)

$80 Diagnosis within Nacogdoches County
$120 Diagnosis outside of Nacogdoches County (within 1hr)

$140 A/C Diagnosis within Nacogdoches County
$200 A/C Diagnosis outside Nacogdoches County (within 1hr)

$60 for spare tire change (Nacogdoches County Only)
$60 min for battery swaps depending on vehicle (Nac

ogdoches County Only)

Automotive Certified through HCC

Heavy Vehicle, Diesel Certified through HCC

609 Certified (MVAC)

Company policy, Parts need to be paid in full when ordered

Customer can provide own parts but Grumpy Grunt Auto is not responsible for failure or wrong part. If customer self diagnosis Grumpy Grunt Auto is not responsible if issue continues. If so a diagnosis fee of $80 must be paid plus labor for job IF client refuses diagnosis only labor for repair is required. We give a 30 min window if client and/or vehicle are not present at time of arrival. A $50 deposit will be needed to reschedule. We pride in work quality and not quantity and put you as a client first.

03 Cadillac Escalade EXT p0200, Injector circuit fault and p0300, random misfire. Inspected wiring on bank 2 and found i...
04/28/2026

03 Cadillac Escalade EXT p0200, Injector circuit fault and p0300, random misfire. Inspected wiring on bank 2 and found injector 4 had a splice wire. Checked the rest of the harness and no other splices found. Don't we all hate rodents nesting in your engine bay.

Complaint was power steering whine, no leaks were found from the reservoir or lines. Lower control arms were drenched in...
04/23/2026

Complaint was power steering whine, no leaks were found from the reservoir or lines. Lower control arms were drenched in oil on both sides. The leak was from rack and pinion seals.

We get asked alot if we offer a/c services and proud to say we do. Don't get stuck in the texas heat without it. Contact...
04/01/2026

We get asked alot if we offer a/c services and proud to say we do. Don't get stuck in the texas heat without it. Contact us today for any acquires regarding a/c issues.

04/01/2026

PSA: phone broke, please inbox us for any acquires for services. We do apologize for any inconvenience

The joys of working on a GM. But new gaskets all around with new plugs and coils. Running smooth and no leaks.
04/01/2026

The joys of working on a GM. But new gaskets all around with new plugs and coils. Running smooth and no leaks.

Ac lines were clogged. New condenser and ac kit, did do a flush to ensure all debris was out.  Don't get stuck in this e...
03/23/2026

Ac lines were clogged. New condenser and ac kit, did do a flush to ensure all debris was out. Don't get stuck in this east texas heat!

Today's job, rear wasn't as bad as the front. 200k miles and still runs pretty smooth. Still need front suspension and a...
02/25/2026

Today's job, rear wasn't as bad as the front. 200k miles and still runs pretty smooth. Still need front suspension and ac kit. Current one is blown

She had some sway, just a little though.
02/12/2026

She had some sway, just a little though.

Complaint was no heat, just blowing cool air. Checking Heater blend door was a fun task in its self. This is one of thos...
02/10/2026

Complaint was no heat, just blowing cool air. Checking Heater blend door was a fun task in its self. This is one of those jobs that I wish I had smaller hands.

Customer had a fuel leak from their generator. Gaskets internally were old and brittle. Ordered some new ones and it is ...
02/04/2026

Customer had a fuel leak from their generator. Gaskets internally were old and brittle. Ordered some new ones and it is good to go.

Tired of having to make time for a simple oil change? Don't stress about scarfing down your food, let us take that heada...
01/20/2026

Tired of having to make time for a simple oil change? Don't stress about scarfing down your food, let us take that headach off of you and enjoy your food while your vehicle is getting serviced.

Evap vent was stuck open, hard starts are a thing of past now.
01/05/2026

Evap vent was stuck open, hard starts are a thing of past now.

Address

Nacogdoches, TX

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Website

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